Well, I think he still is, beyond the strange echo chamber of this site. Solo-ers are diehards who follow his every success and failure but that's not universal - I don't think casual fans give a damn about Central, shitty Photoshops, reissues of Southpaw Grammar, dissecting his sales figures and politicial opinions in minute detail, etc. His public image has always been that of a loudmouth twat and wind-up merchant and nothing much has changed, except he's now beloved by Daily Mail readers.
And beyond the hardcore fanbase, I think Moz has been a 'legacy' artist for a long time. Even 9/10 years ago when he was touring the UK, I saw large portions of the audience mumbling through the new stuff and only 'coming alive' at the Smiths material or the 'big' radio singles rather than the album cuts. He released two poor albums back to back (World Peace and LIHS) which probably didn't help the sales figures for Dog, either. The scandal has tarnished his name and damaged his standing as the hallowed 'elder statesman of indie', absolutely, but it will pass. In 2004 he became ridiculously 'fashionable' for a time; now he is deeply 'unfashionable' but he still has his place in history, and the Smiths are immortal. He has a core of fans who will always be there in some shape or form - but of course, it will never be enough for him.