Tbh I feel like talking about "spectacularly missing" things is a pretty unhelpful approach, not least because the movement's not actually in as bad a place as some people seem to have decided it is via a lack of presence at protests (which also isn't entirely accurate - quite a lot of people involved in XR stuff and escpecially DSEI, particularly at grassroots, are anarchists and simply not on the "organised" radar so much).
When I started out in 2003-odd there was no syndicalist presence to speak of in Britain but the tail end of summit hopping and street carnival was present. Today the street stuff is down but the IWW has grown massively, UVW has been founded and has a big anarchist influence within it etc. I'd say the level of organising around housing struggles is better, our physical institutions are more numerous and mostly more stable (eg. fundraisers are actually going on for roof fixes and the like rather than leaks being ignored) and we're planning multiple major events for next year well in advance. In terms of what I'm personally most active in, Freedom's doing better than at any point over the last 15 years both financially and as a hub for activity.
I've talked to Earth First and some of the Climate Camp folks, and their numbers have been up markedly in recent years. Fracking hasn't taken off in quite the way roads did, but there's still a lot happening. The biggest drain has been the loss of squatting as a jumping off point (the 2012 law did a lot of damage), but even there the odd green shoot can be seen.
That's in the face of getting hammered by the New Left Fashion of Corbynism, massive internal fighting over trans rights and whatever the hell "idpol" is supposed to represent, and all the rest. I think we have a tendency (and maybe always have) to spend way too much time focusing on naval gazing negatives — and that is in itself a problem.