It doesn't matter what YOU want to do. Don't imitate a style just because someone thinks you should. You're not going to be able to please everyone in the world (although you can certainly try!) On the other hand, if you decide to develop your own style, the fact that you're making this creatures that are basically fakemon will draw these kind of comparisons repeatedly (how are you creatures different from fakemon other than artistic style?), so either get used to it, or add a twist that makes it clear it's not just fakemon. There's no reason to get so worked up about people calling you out on not imitating the style, especially if you know someone's going to do it. Just make a note somewhere that you're not going to respond to those kind of posts and why!
Unless you're getting paid big bucks making these for a company, there's no reason to quit or continue, if you enjoy doing these and it stimulates your creative juices then go nuts. If you're just going through the motions then you might want to step back and ask yourself what you're trying to accomplish. Although, I haven't seen a lot of non-fakemon sprites from you so it might be a good idea to try something new!
Unless you're getting paid big bucks making these for a company, there's no reason to quit or continue, if you enjoy doing these and it stimulates your creative juices then go nuts. If you're just going through the motions then you might want to step back and ask yourself what you're trying to accomplish. Although, I haven't seen a lot of non-fakemon sprites from you so it might be a good idea to try something new!