To each their own. Personally I'm not worried about what others say of it. Free sats are free sats imo and it's not like I'm personally risking anything just keeping what I've earned free in there.
Been using this with zero issues.
(Other than having to wait up to 24hrs for larger withdraws)
I'd love to mine nuts but;
1) I can't even figure out how to get the 3 sats into an actual wallet easily.
2) I can see it eventually frying my phone, tablet, laptop, and desktop cpu rendering the used device unusable or needing a new CPU in the future.
Nuts kinda remind me of old school coinpot faucet bitcoin mining(cpu browser mining) only harder to understand, but with more privacy.
Coinpot shut down in 2018 or 2019.