It's not really a theme of the show, but it does kinda fit the general tone. The word love is used to indicate more of a brotherly respect and affection then romance. In that sense it is essentially a stronger form of friendship, and relates directly to this post. The show is as much about getting along with others as anything, so its not a big leap to make. Tolerance on the other hand does specifically reference the ironic nature of the fandom and the contrast to other online communities, but it still fits with the innocent nature of the show, and I cannot believe that I'm analyzing this on this site.