"but it's also good to PRACTISE your own."

but as you have no idea what happens at an English celidh, you don't know what's being practised there. English culture IS practised at English ceilidhs, so the people who go to them are engaging with and celebrating English culture, regardless of what the event is called. You, on the other hand, are NOT engaging with one of the most dynamic and thriving aspects of the contemporary English folk scene just because you disagree with the name.

Maybe you ought to PRACTISE what you preach.