I doubt thermal paste will help much, the cooling solution is essentially the same as in the 13”

Despite having a higher performance 45W CPU (vs 28W) and discrete AMD GPU (probably another 30-50W)

I think iFixit must be mad at Microsoft and happy with Apple

e.g.

"Notably, the speaker itself is anchored and vibration-proofed by way of some (very Apple-esque) rubber screw gaskets."

"A tall standoff spacer, reminiscent of those found in 27" iMacs, holds this beast in place."

"nasty Surface adhesive? Nice iMac adhesive?"

I get the last one, but the first two are very commonly used in the industry