If you really were serious about privacy, you wouldn't put yourself at disadvantage with a locked-down six-year out of date card. Tenstorrent Blackhole exists now, btw.
The Tenstorrent cards exist, but are low in availability and the software is comparatively nonexistent. I'm excited for them too, but at the end of the day, I can buy a used 3090 today and do useful work with it, while the same is not true of TT 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.