There could, there just hasn't been any examples of someone who was paid to hike.
Paid to guide, paid to write, paid to test gear, but never have I seen an ad saying, Wanted: someone to hike year after year. You don't have to write articles/books, guide anyone, test any gear. All you have to do is hike a lot, nohting else required. Will pay $50,000.
There are a lot of hikers who earn a living in conjunction with their hiking. I bought a Packa from Cedar Tree. But I gave him money, not for him to hike, but for him to make me a Packa (and a fine job he did). I bought more hiking books and DVDs (and a half doxen VCR tapes) from hikers. But again, I didn't pay them to hike, I paid them for making a DVD, writing a book, whatever.
It isn't that big a deal if few here agree with you. There are darn few topics here where everyone is in agreement. Call yourself what ever you want. That is a lot easier than trying to make other people call you what you want to be called.