IMO, not a chance that that's against the rules (though of course the mods would have the final say). In many guilds, top players simply give away goods to lower-age players, especially when they're not using them anyway. A "push" account is one in which the primary (often sole) purpose of the account is to "feed" another. That's not what's happening in your hypothetical. You have guildmate A being generous with guildmate B (not to mention guildmate A probably won't even miss those goods), and guildmate B is trading down.
Now, if guildmate B spent a month doing nothing but putting FPs on guildmate A's GBs in exchange for the cited 10 FE goods, then you might run into a problem. There is a degree of subjective judgment involved. Keep in mind though the mods are also experienced players (I'm assuming since they frequently advertise in-game for them). They know the difference between a "push" account and doing a favor for a guildmate.