I like Keats, too. It truly is a shame he died so young. He's one who probably had several more years of productive work ahead of him, had he lived.
Morrissey can cite Keats as a source all he wants to, but his music is far too dark and angst-ridden to have much of an influence from Keats. People need to be a little more circumspect when they claim influences from famous poets. Someone may have actually read that particular poet and may wonder if the musician was just saying something because it sounded good, not because it actually had more than a grain of truth in it.