I agree totally.
I play a lot of covers myself and some solo's you just can't get right (too difficult or too fast that you can't here the actual individual notes, whatever reason).
In that case I prefer writing my own solo, it adds a personal touch to
the song and you can lay down the feeling and the emotion in it and that's indeed 90% of the solo!
And the audience will probably be more positive with you making your own good fitting solo, than a crappy replica.