I tried searching for existing questions but didn't find any that answered this scenario, and in general I feel like I've been getting conflicting information so I wanted to ask here.
So basically I have a 105.6 pound TV (TCL 85QM850G) that I want to mount to my apartment living room. The building is fine with me mounting it but is concerned about the weight. There are 3 metal studs on the wall, spaced 16 inches apart, and the building told me the studs are 3mm thick steel. At first, they said I shouldn't mount anything more than 50 pounds, but when I asked if it'd be fine if I used more screws (e.g. if each screw can support 50 pounds, then using 4+ screws should be fine) they said that should be ok assuming I used the right screws. So first off, is it correct to say that using more screws will make it safe to mount? And if so, which screws should I use?
Then the next issue is that manual for the TV said that any wall mount should at minimum be rated for 5x the TV's weight, which to me sounds absurd as I can't find any consumer grade mounts rated for 530 pounds. Is this being overly cautious? I saw this mount: https://www.sanus.com/en_US/products/tv-mounts/vxt7/, which is rated for 300 pounds, would ~3x the weight be sufficient? Should I be looking into fixed mounts as opposed to tilt mounts? I definitely won't look into full-motion as this TV seems to heavy for that anyways.
Lastly, assuming that the metal studs can take the weight, and that I don't really need to have a mount rated for 5x the weight (e.g. I go with the SANUS mount above), what screws should I use to secure the mount to the wall? When I asked SANUS, they said they don't recommend the VXT7 to be mounted to metal studs as they are too weak, so they don't sell any hardware for mounting this mount to metal studs, but could I get screws elsewhere?
Or is all of this moot because the TV is just too heavy for metal studs and I should just focus on getting a strong media console to go under it?
I do see some other questions with solutions mentioning mounting wood to the studs, then mounting the TV to the wood, but I don't understand how that solves the problem, doesn't that just mean more weight is put onto the screws going into the studs? Or is the idea that using a large wood panel gives you more surface area to attach more screws to the studs?