The complaint is that Wally's treatment is one that they never gave to Jay back in the Silver Age through to the 90s and 2000s. Jay was respected. Wally has been denigrated repeatedly. First, his entire existence is wiped from the record, then his wife and chidren are taken from him, and then he's established as a killer who would go to extreme lengths to cover up his crime. And while Jay's current situation involves the former, it doesn't involve the latter.
So, I'm sorry, but the belief that Wally West fans don't have a legitimate complaint about how the character has been treated is just ignorant of the facts. Jay Garrick was never turned into a killer who literally framed two other people for mass murder.
Again, Jay went on to have such an integral part in the Flash comics and Flash family that its really not analogous to what's being done to Wally. Jay was literally one of the key players in seminal Flash stories like the Return of Barry Allen, Terminal Velocity, etc. and again is and always has been cemented as a core member of the JSA. Wally is back for what, five minutes before he's shipped off out of the Flash title and off to Sanctuary where he's turned into the literal villain of the story??It's relevant when you're saying they should treat Barry/Wally the same way they treated Barry/Jay and Wally/Jay. Jay was gone for 6 years. He didn't show up in Wally's Flash comic until #73. The Justice Society comic was cancelled after 10 issues, then it took another 6 years for the series to return.
The difference between what happened to Jay in the 90s and the current Wally situation is that, even if there was a period where Jay wasn't used, it likely wasn't because someone at DC editorial had it out for him. With Wally, however, it's become more and more evident that he's been targeted because some of those in charge at DC find his very existence problematic. Some of TPTB don't like the fact that he makes Barry Allen look "old" because apparently superheroes can never be portrayed as being over 40.