I think it's disingenuous to suggest they're putting themselves at a disadvantage with an RTX 3090, especially in a comparison to an inferior product that isn't even shipping yet.
RTX 3090: 24GB RAM, 936.2GB/s bandwidth
Tenstorrent p150a: 32GB RAM, 512GB/s bandwidth
an extra 8GB of ram isn't worth nearly halving memory bandwidth.
Tenstorrent p300 is coming at 64 GB and 1 Tbps but that's not the point; even p150a with plenty of bandwidth (512 GB/s is fine for inference) and four 800G ports. But hardware is not the problem: even if they had the hardware, they wouldn't know what to do with it. Privacy is a hobby to most people, making you feel good.
RTX 3090: 24GB RAM, 936.2GB/s bandwidth
Tenstorrent p150a: 32GB RAM, 512GB/s bandwidth
an extra 8GB of ram isn't worth nearly halving memory bandwidth.