A lot of these things are idiot proof. Most of these heatsinks come with thermal pads for you to use in the kit, and as has been pointed out, these thermal paste are not electrically conductive to prevent short circuiting your motherboard. Sony and Microsoft use viscous thermal Paste inside PS5 and XSX for the RAM and Storage modules etc. If you decide to use liquid metal on the other-hand that is a whole different thing.I don't know. You're probably going to see a lot of people crying about how their PS5 "broke" after they tried installing it. Like that idiot above buying thermal paste for it.
PS5, look at the past on the internal SSD
XSX, look at the thick paste on the SSD.