I've never felt that whether a musician I don't care for was deserving of my respect was an important question. It's not like I'm a member of the board of the international musicians guild and I have to weigh in on whether to admit other members and decide what form their hazing will take.
If I know someone personally, and don't care for their music, but see the way they live their life, I might develop respect for them, but that's more broad than just as a musician.
Other than that, I might sometimes have an opinion about someone's skill level as distinct from their musical taste or career choices, I can see and evaluate those things if I have a reason to; but skill in and of itself is not inherently interesting IMO. Music isn't like sports where skills (separately from aesthetics, which can be hard to separate) have inherent value and relevance.
I see music as being more like speech, where what matters is what is being said and whether it is clearly and well expressed. Not how much vocabulary is used or how clever the logic or references or manipulation may be. If someone is talking a lot of BS and they are really good at it, their hard won "skill" has been transformed into a negative. No matter how much work went into it. It's kind of worse, if they put a lot of time into it first to end up doing that.
Music can be the same way. Anything can be taken too far, including skills without ideas or meaning.