Yeah, I am not surprised to hear that, they made a whole ''business'' with that
Out of curiosity, can you tell us how many they were asking you to pay them for writing fake positive reviews?
$4 - $6 / review. It sounds like a lot, but if a business has 10-20 legit looking reviews you'll probably trust it.
This is very useful, but I am not sure if all cards from Stealths can be considered as Gift cards, they are more like virtual debit cards.
There are also cards from Cake wallet you can consider adding for comparison, and maybe other also.
Stealths has gift cards too, not just debit cards. See
here. Although, unlike other providers, they charge a fee for issuing them. Then again, they accept Monero, work over VPNs and Tor, etc. So you're paying for the extra privacy.
I'm currently discussing with Cake to get their cards added. Should be done in a day or two at most.