Fair enough
'Poppy Day' is a relatively recent fund raising initiative. Poppies are sold on many days and there are countless opportunities to buy them. They can have a fundraising day whenever. They very publicly intervened on the strike news coming out against the RMT.
I find the British Legion quite a frustrating charity to be honest. They never say a jot about the reasons for war, the decisions that cause death or suffering to service people and their families. They take money from arms dealers who profit from the death and injury of others. Totally silent for a century on these issues, but have intervened in the public relations battle against the RMT.
It's a moot point anyway, as the RMT are intent on winning over sections of the public who no matter what they do still slag them off as evidenced by the comments underneath the RMT's tweet.