long version
Why you build shields with high megajoules and why resistance is not so important
The most frequently used weapon, especially by anarchists, are plasma attacks and especially the so-called plasma ram. The plasma Ram is a maneuver where you ram the enemy frontally at full speed and shoot the plasmas shortly before. Add to this the fact that many plasma weapons are reinforced with thermal conduit (increases the damage by 60% if you fire the salvo at 101% or higher ship temperature) which has been officially reported as broken to Frontier.
Yes and no.
Everybody who is getting serious about PvP will learn to use PAs as they have the highest burst damage output and once you git gud they are relatively easy to use. As you rightly said 60% of their damage is absolute therefore high raw MJs are important then facing them. With rams being broken a high raw shield value is again better than balanced resists. Agree with you there too. With the pip multiplier shield tanks have the advantage compared to hulltanks in rams. A plasma ram is just combining the 2 things and used if you have the upper hand in the numbers game. I wouldn't PA ram in my 2 booster bi-weave.
About TC, the heatbug was fixed and heat damage is no longer that bad. It is still a skill you need to git gud to keep you ship in the right heat window for TC without burning your modules off. 60% damage increase for TC might be to much, a number closer to 30% would probably be better. On the other hand anybody can use it and git gud with it, so there is an even playing field after all. Plus who doesn't like to fling little suns at their opponent.
My Conda after a duel there I messed up my heatsink to bank ratio. I run all TC PAs on it. Still won, but it was close with most of my weapons gone.
Off topic
Do some research on Anarchy, Anarchism, and what the description of the in-game Anarchy factions are. I know lots of in-game Anarchists who do not use PAs or fixed weapons. Some are actually in-game pacifists

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anarchist /= outlaw, griefer, ganker, ....., eating little children. Stop confusing things or worst do it deliberate to further your agenda.
My favorite quote about Anarchism: "Anarchism, to me, means not only the denial of authority, not only a new economy, but a revision of the principles of morality. It means the development of the individual as well as the assertion of the individual. It means self-responsibility, and not leader worship." Voltairine de Cleyre
Learn about things before you start attacking them, you might cut your own leg off in the process.
Back to topic
in addition, a very heavy shield with 4000 mj (standard for PvP Fdls in our community) has more hitpoints on the 3 damage types than a 2000 mj shield with very good resistances because the mj itself is a stronger multiplier than the resistances.
this is the shield configuration of my shield tank fdl. try to aim for a thermal value > 20%
The heavy gamer-de-lance has 3.6k MJ raw shields (6 boosters), but it's not what most people use though. I do hope you didn't skip on hull day with that 4k shield thingy. If not it's a slow hog, also something you don't want to have in a non-1v1 situation.