Of course blu can call trusts like every other job. The whole point of trusts is that they can make up for abilities and spells your own job lacks. People playing solo with trusts shouldn't even care about blu, especially since hey, you're solo, it's not like you have to compete against a blu for your trusts to invite you to a party.

Because I do have the suspicion that all this hate against blu really is about other melee jobs feeling inferior. They can try to justify themselves with "but...BALANCE!", but the game has never been balanced, and there have always been jobs that outperformed others. They can argue that MG is too strong, but it's not like no other jobs can cast haste II. They can complain that the PUG leader might pick a blu over their own melee job, but you can always just start a shout yourself. Most people who do runs with statics or shells actually do have a chance to play on their other melees if they have actually taken the time to learn them, gear them, and play them well, because the rest of the group have learned to trust them to do their job, The problem with PUGs is that they have no idea who you are or what you're capable of, so they err on the side of caution and ask for strangers to come jobs that have a simple role (do you have X spell?). And I'm not saying blu in regular play is simple, as it does take skill and time and gear, but for a fight that lasts 3 minutes (because I think all this complaining we're seeing pop up right now is really just from this month's ambuscade) the blu really doesn't have much of a role beyond "buff, ES, subduction, hit mob". So I'm sorry if your server's PUG leaders don't want your WAR, DRK, SAM, whatever, but why don't you try actually starting your own shouts? Or why don't you make some friends so you don't have to resort to shouting? If that seems impossible on your server, maybe change servers? I have friends who shout for PUGs all the time on Bismarck, and we have a good enough mix of jobs geared that we couldn't care less what dd they choose come on as long as they can actually hit the mob. And I'm sure you won't hear that dd job complain that one of us came on blu and used MG to make his own life easier.