There have been a lot of assumptions made within the past 5 pages of this thread that don't fit with my observations or experiences (they may fit with others, but they're pretty foreign to me).
I LOVE videogames. I have not one, but TWO world of warcraft accounts that I play several hours per day. I was an avid videogamer in college.
But, here's the important part: I play rpgs because there are elements that I enjoy that are not present in videogames.
I'm not going to share what those elements are, in part because I may not be able to name them all, but moreso because whatever I list, someone will be able to provide (somewhat of) a counterexample. Yes, SOME videogame somewhere might just capture some of the elements that I like in rpgs. ANOTHER might capture a different element. Video games can do a number of things very well...better than TT-RPGs in a lot of cases. However, there are elements that face to face, real person, imagination, storytelling, and character immersion TT-RPGS provide that are superior to videogames.
In the end, TT-RPGs are low tech, require math, can be hard to schedule, sometimes require knowledge of dozens or hundreds of rules, may have slooooowww combats, may have long periods when it's "not your turn", etc.
So why play em over videogames? Everyone here plays them. Why?
Because the experience of a TT-RPG is different from a videogame.
(Note, I want to point out I'm not setting up a false dichotomy here of "you can only enjoy one or the other"...I'm stating that you (like me) can enjoy both, but they are not the same...and the fact that you choose to spend your time playing TT-RPGs when you could be playing video games shows that it has something different to offer.)
EDIT: Forgot to answer the OP (doh!). When I say an RPG is "videogamey", what I'm usually referring to is that it has more of a focus than I would like on elements that model things I enjoy in videogames and less of a focus than I would like on the elements that I enjoy in my TT-RPGs. I also like boardgames. If I found an rpg that was too similar to the experience of "battleship" or "risk" (and not similar to the other rpgs I enjoy) then I might refer to it as too "boardgamey."