Lots of articles and discussion in the media at the moment around diet, eating less meat, increased availability of vegan options etc. I keep seeing reference to Flexitarianism and think it's bonkers tbh.
I think we're a fairly typical household diet wise, I don't know anyone who has "meat and 2 veg" type meals every night, the last time I saw that was my grandparents in the 70s.
If we're eating out, sometimes I'll opt for the veggie/vegan option, purely because it's the thing I fancy or most like the look of on the menu.
At home, we probably have red meat once a fortnight, quite a bit of fish and chicken , maybe 3 or 4 times a week on average, the rest is plant based.
This is just being an omnivore, and eating a varied diet for taste, preference and choice with a nod to health and budget reasons.
I would not describe myself as flexitarian, or part time veggie/vegan, all of which I have seen recently. Unless you are actually vegetarian or vegan then no descriptive label of your diet is required.