The 'repeal' of NN by the FCC was only made official in June, that's hardly enough time for ISPs to change their behavior. Especially when they know people are paying attention and abusing their newfound power right away would be noticed. Better to quietly make plans and wait for people to start paying attention to something else before putting anything into action.
As others said, if it doesn't make any difference why are ISPs so against NN becoming policy? It is pretty clear they intend to eventually do things that NN would bar, otherwise they wouldn't care about NN as a policy any more than they'd care if there was a policy barring them from hiring house cats as CSRs.