It seems not many devs may have a passion for improving the privacy implications of their code.
I know you _probably_ aren't referencing this, but coming from someone who tried to crack the "Privacy-focused tools / SaaS" nut for a year... the privacy community really isn't interested in having products catered to them.
They are, in my opinion, the worst community to try to build for and especially try to build a paid product for. You likely have to come at it from the direction of selling their boss or non-privacy minded peers on it then those peers forcing the product onto them.
Only open-source is allowed, can't market to them even as a solo dev (how do you market to that which allows no marketing or promos), little interest in paying for hosted tools and are definitely the main proponents of "why would I use this when I could glue together [obscure tool 1], [obscure tool 2] and [obscure tool 3] and pay you nothing"
Love 'em, one of 'em... will never waste my time trying to cater to them again.
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But I also suck at marketing so might be a terrible bias, ha.
Otherwise I know there are also Meetups about Privacy engineering organized here : https://www.meetup.com/fr-FR/privacy-engineering-sf/
I hope that I helped :)
https://matrix.to/#/#syphon-offtopic:matrix.org
Let me know if you find or create a group like this, would be happy to join!