Unfortunately it isn't that easy right now. Pre covid yes the LCC were picking up regionals guys after 500-1000 hours. Now that there are regionals who went under and still plenty of pilots on the streets as a result it is no longer as easy. Not as simple as I'll come to a regional for a year or two then go to an LCC. I know at least in my case I want to ride out a career at an LCC for QOL purposes and hopefully that day comes.