"The other reason I’m hesitant is that I see quite a few of them for sale online right now, which makes me wonder why - unless it’s just a matter of typical audiophile fickleness/upgraditis and not a reflection on the quality of the product"
Not an owner but heard countless times.
It's an established popular model for many years. That alone tells you it's a solid choice. The abundance of used means you can find one for a price you want to pay-if you chose to try used.
Plenty of user reviews here, and other sites.
You will get maximum enjoyment of your LP's with the Rogue Ares tube phono stage than with the built in.
It's maybe one of a half dozen "can't go wrong" 1st time try tube integrated amps.
Don't ask what the other 5 are. You'll get 274 different responses.

