These things regularly come up, and people complain about the obvious garbage, that constantly fill their store pages (which doesn’t really happen to me).

gift cards can only be for buying games, not DLC or in-game credit

That’s even worse.

You’ll either have the balance on the actual gift card, not in your wallet anymore, and potentially a bunch of cards with a few bucks each lying around, that you need to keep track of.

Or you add a secondary wallet, just for physical gift cards, and people will get confused why they can’t buy something, when Steam says they have the funds.

I’m pretty whatever about this change, since it doesn’t impact me.

PaysafeCard is an alternative, if it’s available in your region, or depending on the amount of scams involving the physical cards, Steam should just eat the cost of the additional support needed to combat this better.

No, it was the other way around. Because of the massive influx of Chinese users, the Linux share dropped from ~3% to ~2%, because they basically all use Windows over there (for gaming). Then after the Chinese users were removed or accounted for (or whatever Valve does), Linux jumped to the record 5.3% last month.