It would be. You can order the Bolt Though Kit from Amazon for like 12 bucks.. comes with everything you need to mount your TRUE to a modern CPU. I considered mounting mine up too, but I own TS140P and LGMRT so TRUE is not really needed.. but I wont sell it..
Le Grand Macho RT has been good to me. Used it on X5690, 3770K, 3600XT, and now my 5600X. I ran my 3770K and 3600XT under it passively cooled with no CPU fan on and it was fine for a couple of days. The 3770K was at 4500MHz. And it doesn't block your ram at all.
Do you just have the sink? Do you have any other components? Those guys used to work for Thermalright, and it almost looks like Thermalright's Bolt Though Kit might work for you. They are on Amazon. If anything it will give you everything you need to mount it. Not sure about the top clamp...
If it helps, just a few months ago I was using a 3770K that I ran between 4600-4800. Honestly.. it was fine. It was still fast.. but my 5600x on B550.. its ridiculous. I would love to buy a GPU to go with it :D
That's odd.. my Thermalright coolers have not done this :D
They do have some wear but nothing like that..
Just use it. Its still better than a DRP4. If you just want a new toy then sure why not..
As for TIM.. it probably doesn't matter much who you go with.
I bought a 5600X from Newegg the other day for retail. There was only 4 in stock when I saw it immediately hit Apple Pay lol.. Third party was selling for 200 above retail. I hope all of those shit bag stores die when the world goes back to normal.