So new version of SteamDB require new permission

Of course it requires data from that particular site, that's what you want it to do! The risky permissions of the other thing was that it required data from ALL OTHER sites as well!

I don't think you mean Steam DB, but you can look at the thread that's about the SIH here:

https://www.steamgifts.com/discussion/UBlV0/steam-inventory-helper-adds-privacy-data-collection

Well, you want this extension to modifiy steam website, so yes, it is kinda required.

For SIH, it asked for every site you visit, so it includes paypal, gmail, banks, as well, etc... it goes far beyond of just ignorance of cybersecurity, spyware or incompetence, that is cybercriminality.