It's not exclusive at all. I have a fantasy lore and a science fiction lore in pretty heavy detail; the former bleeds into my fantasy gigs to a limited extent and the latter simply doesn't show up at all. Both are too well defined to be more than self hosted GM concepts, given I've created the paradox of being the only one able to host the world and given the investment it takes that I cannot offer, stifling my chances to even use it in roleplay.

Personally? I consider it a necessity to be able to either a) work around your lore and simply make something new for the sake of roleplay, or b) wield the creative energy to twist the results into something mallable for your content. Both of the aforementioned canons are composed of roleplays that didn't fit the world at all, and were posthumously made to do so. Inapplicable details were tweaked, but the core experience and the personalities involved still remain as legitimate entries to pad the depth.

Or, as noted above, decide you want to try and host something in the world anyways and make the ground rules very clear. It would take a special lore that couldn't possibly be simplified into a format a reader (we read here right?) could understand the gist from in a few blurbs, and you're bound to get some bites who get it if you've done your job, though you'll inevitably get bites that you don't and you'll need to handle them accordingly. The key to all of this is clearly communicating that you are stingy about the content and that you are trying to develop an already well developed lore, and that you will have very high standards for keeping continuity. As long as you make this clear and stay consistent, you are Kenobi on the high ground.

But again, that is not to say you have to use it in a roleplay context at all. You can relegate it to a background personal work and then branch out to things your mind does not have so completely defined. But staying with the core question, no, there's probably quite a few people who are the same way to some extent or another.

You couldn't be more shamed than when I just tried to make the community happy and all my friends were launched into orbit by nuclear detonation.