The more established airlines probably don't have any pilots under 45 with tons of good experience.
Negative on that. The likes of Lufthansa or British Airways either used to have or still have their own flight schools and train young pilots from walking to flying their precious jets in a pretty short time. Same as the military does actually. The problem of manual flight is not with those young pilots just entering the line, it is a much bigger problem for those flying only longhaul for a long time with only 1 or 2 landings every couple months. Shown both by inhouse and by NASA safety studies.