As someone into diapers, I can say that it is weird. It's not bad or anything, and I'm not hurting anyone, but I feel it's something quite personal I don't particularly want to share with people who know me IRL, like my friends or my family.
I'm fairly sure the majority of people don't even know what DLs are. It's honestly not quite surprising that the vast majority of people find it weird to wear diapers, and especially use them. If you crap yourself next to a random stranger and they notice, odds are, they'll be... Bothered, at the least. And even if you're a grown adult with full continence and people see your clean diapers, it could bring that connotation with it.
I don't think most strangers would really care about diapers though, they might figure that you need them for medical purposes. I think there's quite little people who really give a damn that people are into this, and actively spout their hate for DLs. These people shouldn't even be bothered with, because they're just ignorant and have nothing better to do, probably under the misconceptions that we're pedophiles. Or the fact that some (me included) actually purposefully partake in voiding their bodily wastes on themselves could gross them out, which I completely understand.
Again, as long as it doesn't affect others, I see nothing wrong with it. But from the standpoint of someone who isn't into this stuff, this is weird. Not worth trying to demerit, and to me, not worth everyone knowing this part of me.