This is an issue. You should look into replacing these with CMR drives, or rebuild a new pool.
Even though it may not be the (sole) reason for your trouble, as it seems that 24.10.2 and/or 25.04 are perfectly capable of eating pools without SMR drives being involved.
But first, your data!
Check before trying potentially dangerous commands.
Since -f and -F have already failed, your next attempts would be -X, or at -T 8847849 with the fourth drive.
Try sudo zpool import -FXn pool in a tmux session, as this could take a long time to return… and the desirable result is actually nothing (no error). This should be safe due to the -n option. Wait for confirmation by @Arwen or @HoneyBadger before attempting real recovery (without -n but with -R /mnt).