Hasn't won enough Shearer
I wouldn't begrudge Pickford getting on in the future if he wins the World Cup this summer, that's roughly the same scenario (aside from the obvious that some don't care at all about the womens team - which whilst I can't pretend to be the biggest week to week fan of womens football, I do think as fans we should want any side representing the badge to do well).
I will say the whole argument relies on the fact that I fully expect this to be a yearly thing, and we're not just going "Ah wey there's our legends lads".
Thinking about it we should probably have said from the off it was 13 from the mens team and 1 from the womens team, I'm sure some would have complained from the outset, but it would have been more palatable following the results.
I know you said you wouldn't want your stone to be next to someone you deem not to be a "legend", but you'd be right next to the spot where a bunch of parents explain to their daughters that yes a women has made the legends walk. I think I'd get some satisfaction out of that if it was me.