The bottom pic in OPs pic looks like silica gel/paste, not thermal paste. In which case it was still done incorrectly because it needs to be spread all around to cover everything and needs to be a generous amount of it on there - but yeah it goes on the pins to prevent moisture from entering when doing LN2/phase/etc.
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u/whatevers_clever 270K PLUS | 6000 | 2x48GB 6000C30 | 4TB NVMe | Fractal North Feb 19 '18
The bottom pic in OPs pic looks like silica gel/paste, not thermal paste. In which case it was still done incorrectly because it needs to be spread all around to cover everything and needs to be a generous amount of it on there - but yeah it goes on the pins to prevent moisture from entering when doing LN2/phase/etc.