How do you feel about singers who got famous through acting?
I think most c-pop singers who made it this way have rather plain/mediocre voices. Since they gained a lot of die-hard fans through their hit drama, they often get overpraised by said fans as if they're top-tier vocalists with the most beautiful voices. In rare cases, the "singer" can barely even hold a tune, but that doesn't stop their fans from supporting their music and they often end up charting well on Chinese music platforms whenever they release a song. They would also probably make a decent profit from selling albums and holding concerts, if they haven't already.
And of course, almost all of them don't write their own songs, or even participate in the writing.
Seeing them do well makes me feel bitter. However, there are a few who I believe deserve what they currently have (or even deserve more).
EDIT:
If you want names here are some of them: Xiao Zhan, Wang Yibo, Luo Yunxi, Ding Yuxi. I can name a few others but I really dislike them so I don't want to give them any kind of attention.