Sure, because the pre-Odyssey peak was so big by comparison that everything after that looks flat - and obviously it's not going to get back up there in any hurry. Set the graph to start in August 2021 (for the post-disaster view) and U14 seems to have done reasonably well in that context, though: a decent-sized jump up above the baseline level in the short-term, and the new baseline level it's at now is a little bit higher than the summer 2022 one in the longer-term.Using the dreaded Steam charts (which is the only semi-reliable source of player involvement publicly available) suggests that nothing post Odyssey has really had that much effect.
If they can keep doing that and raising the baseline a little bit at a time, then they might one day get enough players to be able to fund something bigger again - and in the meantime, can keep being quietly profitable. Even "flat" wouldn't be bad for a 10-year old game that still brings in £2M profit a year.
(Other semi-reliable public sources like EDDN traffic or Squadron leaderboards give similar numbers and definitely similar directions - Steam charts are absolutely fine for estimating "up or down", it's when people misread "concurrent players" as "total players" that the comedy starts)