They’re good enough for sure Mick, lots of bands have made a good living from mimicry which is what being a cover band is. Different animal to me as a songwriter as I have zero interest in covers. We are often in opposing camps. I have musician friends who only do covers but I mainly mix with other songwriters. We can talk for hours about composing. Interestingly when I finish a song it’s on to the next so even as a writer I don’t dwell on past songs. When I write, perform, produce, it’s about how I want to do it and not how someone else did it.