Qubes hasn't always shipped Xen patches nearly as quickly as I would like. It's the unfortunate reality of the situation they're in, simultaneously trying to catch up with broad-spectrum device support, with a miles-long HCL with many entries having sub-threads attempting to resolve significant compatibility issues. Don't buy hardware that's too new, don't buy hardware that's too old, certified hardware doesn't necessarily stay certified, and so on. It's a mess.

I love what they're doing and it's my preferred daily driver, but from a security standpoint they're still pushing molasses up a sandy hill.