Oh I don't have a problem with it per se.
I was just trying to give my two cents to another user's question pertaining to as why a lot of the early NARC deployment units weren't that optimal... I suspect the game designers at the time designed the CANNON units as not too effective to keep "over all" play fun for most players, in case they had introduced a weapon that could lead to unbalanced game play. I think we have to remember that when NARC was introduced you didn't have the potential ease of player feed back and play testing that you do now days and they may have wanted to be a bit cautious with NARC.
Given that TPTB have always given us the ability to build our own units, players were free to build better delivery units if they wished.
I like NARC and as stated earlier my Megamek games use some relatively fast moving NARC deployment unit.
If I played a lot of tabletop I'm SURE I would be one of those dudes trying to make plenty of use of indirect fire and NARC. Heck, I've been experimenting with iNarc.
I can't discount the rational you're proposing, but I am having a bit of trouble seeing it. At the time, NARC was no better than Artemis IV. I would not be at all surprised if there were a few games at FASA where Artemis and NARC both offered TH bonuses, and I can understand them feeling that was a bit too much for regular play, but lets throw it in as Artemis V in Tac Handbook.
One thing that's always bugged me is how the Clans have their weapons development set up. Given that the warrior caste has had overwhelming control since the Golden Century, one would think that weapons would be geared toward the smaller-scale combat that warriors prefer. Not that every battle allows for zellbrigen to take place, but a glory hound ascending to the Khanship (which, frankly, is every Clan warrior by default) would probably not be keen on signing off on weapons development which didn't allow for bragging rights.
Now you may think that means "no artillery," but it would also mean "no pulse, no targeting computers, etc." If anything, I would think Clan soldiers would attempt to fight with the most-handicapped weapon system possible. i.e.: if one Clanner is using an ER Large Laser, the other Clanner would bid down to a Spheroid-vintage, standard Large Laser to show him up. In the same way that one would "tie one hand behind their back" in boxing to humiliate the opponent. I don't believe that Clan weapons would have developed as far as they had given this attitude being the prevailing mode of thought.
Just my $0.02.
I think the no arty-malarky comes from the focus on the individual. Sure pulse lasers or targeting computers may be "cheaty" but I studied better than you, trained better, planned better, bid better, and ultimately used the tools at my disposal to fight better.
As to the development level, that just comes down to the Clans never lost the plans to make the machines to etch the control chips for pulse modulators. It wasn't just mechs and vehicles and the like getting destroyed in the SW that dragged the SW down. It wasn't wasn't even loosing the plans to an XL engines, etc. It was loosing the plans to the machines that
made the XL engines. The Apollo program took nearly a decade. If there was a unified, sustained directive to NASA, "Put men back on the moon, ASAP. Here are the keys to Ft. Knox. Go," it would still take 5+ years, even if we just dusted off all the Apollo plans. Trust me, NASA has that stuff in a cabinet someplace. We would need to rebuild the factories that built the Saturn 5, rebuild the factories that processed all that fuel, and boy were those engines thirsty. Heck, we would have to rebuild the factories to produce those ancient, so-called computers! In many cases, all those plans may well have been lost.
Ask any materials scientist at in the 3020 graduating class of NAIS what endo steel or ferro fiber was, and they could tell you in a heart beat. They could describe how it was made. But when you ask them how to build the tools to make that complex composite material, and you'll start hearing crickets.
Just given population size and Linus' Law, if the IS had been able to keep building on the old Star League's knowledge base, then by the time the Clans showed up, the tech miss match would have probably swung the other way.