It's ok not to like Kermit's new voice and actions. It dose not mean your a terrible Muppet fan. It also dose not mean your aginst Matt for not thinking to fondly of what he is doing with Kermit. The two videos we have seen so far have been very short, and we really do not have a lot to truly base a good solid thought on.
It's ok to be angry at this whole mess between Steve and Disney, and this is going to take time. Time to adjust, time to heal, and for some a time to forgive.
Also even though all this has happened it's also ok to not jump on the bandwagon of yes Disney was right Steve should have been let go years ago. It dose not make you a terrible Muppet fan to still want to support Steve, and hope he will someday return. So please don't feel bad if your thoughts on Matt's performance is off it's going to work out one way or another.