Twas ever thus... years ago the fossilised remains of BA and others used to take their generous FS pensions and then walk into a direct command at the regional turbo prop operators. We all used to bitch about them nicking 'our' commands. Its only partially true, but was made somewhat worse when they used to brag about how they didn't really need to work and the TP job was just for pin money!
These days, we all get the opportunity to work an extra five years in the LH seat and those stuck in the RH seat just have to wait a bit longer, but will eventually have the same amount of years in the left. It just feels a bit raw now as we are still seeing the bulge of fossils created by the change in the law a few years back. My employer has published retirement figures that show a distinct bulge in 4 years time.
Also worth remembering that a fair few 15 year FO's earn as much as a year 1 skipper in Jet2, some even more.