Does anyone else find it odd that players who just hit level 50 are shunned by DL/Relic players in parties?

First, I know DL/Relic players are looking for speedruns, and that's fine. I have PLD that has Allagan/AF2/DL gear and is doing Coil, and is capable of doing speedruns. I know how appealing they are.

But why are these players taking the time to shun, or even further, belittle players who are trying to grind for DL? Just today I joined a shout party with a DRG who was in AF gear and was looking to do Wanderer's Palace to grind tomes, no speedrun. Literally 5 players joined the party, then immediately left when they saw his gear. One even took the time to verbally state his gear was horrible. Which is ironic because that's why he wants to grind tomes.

So What is a fresh level 50 supposed to do? Use Duty Finder? The problem exists there as well. Praetorium Speedruns? That demands Relic as well. Castrum? Who does that anymore? The only good choice seems to be ask friends to grind with you, but why should players wanting to strive to be as good as the elites, have to go through so much anguish just to grind tomes? Shouldn't the community as a whole be more tolerable?