is it possible to have a port for 1.19.2

It is planned, but porting lib doesn't have a chunk loading module for 1.19 and below, so it will take a longer time.

Is "longer time" on the scale of weeks or months here? No pressure, just curious what the ETA is

To be honest, it would be on a scale of days if I had the time to work on it, but right now it will be at least a month.

Power Loader for fabric 1.19 is out: https://modrinth.com/mod/create-power-loader-fabric