I'm tired of seeing people complain that a musician left a band. Stuff happens guys, people move around. It's basically the equivalent of complaining that someone switched jobs. Are you really expected to work at the same job for 20 years? Well that's what musicians do.
Yeah! Wait, what?..
Yes, Jari left Ensiferum and Petri is there now. That doesn't mean the band is now crap. It's a new band now with a new style. Petri may not be as skilled technically as Jari but that doesn't mean that everything he plays on guitar is terrible. Anette is currently the vocalist of Nightwish and she has been doing a great job. She sings in a different style than Tarja, which doesn't mean she's bad. If you want to listen to Tarja, listen to old Nightwish or her solo albums she started releasing. Nightwish is a new band now with new members. That means it should be looked at differently than their first few albums. And can everyone please stop complaining about Rafał and Krimh. It's very tragic what happened with Vitek and Covan, but Decapitated is and always will be an amazing band.
Seriously, no one ever complains when the bassist leaves.