Naw, you can play however you like.
that's one of the great things about this game. However, you only grow by testing your limits, so if you feel yourself being comfortable, you should try something completely different from your usual.
Threads like this one give insights into how other people play, so you can try something new, and grow as a player. I am all for threads like this!
Simply because I like to do minimal embarks (it's mostly because I'm lazy and don't want to spend the time poking the game to be "just so", and actually like the unpredictable results of letting the RNG hold sway) doesn't mean you should take that as god's own truth; on the contrary. I think you should only try it if it is very much outside your norm, otherwise you don't grow, and the experience won't be FUN filled.
(And nobody wants that, least of all me!)
If you have reached the point where the embark profile holds no real meaning for you any more (like myself, and several others who have responded), then perhaps the next challenge for you is to let somebody else provide the embark, and lay some rules. Community challenges are often quite challenging indeed, and the results of such things are often a pleasure to witness. I really mean it, some community challenges will make you question your own sanity while playing, and are well worth it.
For instance, I am contemplating creating one myself, having read ITG's science on "power mining". To me that represents new, and untapped potential for a community challenge. Nobody has wholly removed that much of the raw material of an embark before. Imagine, an embark where the SMR is litterraly at your feet, there is almost no stone, no surface water, no soil, you can't really dig any deeper, and the elements are right overhead. Bonus if has huskifying clouds.
The embark should always be one that challenges you, and makes you have memorable experiences. An unremarkable fortress is not worth playing.