To a degree I think this is true. But I think its very region (not Sota regions - just general areas) specific.
For once, I seem to have gotten lucky and live in an area where activity is reasonable, and even my lowly white stick antenna is doing well. Its also something I do have an interest in so I am making more of an effort too. Having said that though, due to living where i do, and not being available 24/7 I am surprised how far up the chaser table I am after almost a full month.
Taking all G, in the challenge table I am 3rd in the list.
If you take the same “All G” but for all mode for 2m in the honour rolls, I am 16th and this is including my extra efforts on SSB. FM only I am 69th (which is normality) . So, the inference I take from this is that only a few people are making the switch from FM to SSB, since under normal circumstance, I shouldnt be that far up the list. If at the start, someone would have said “you’d be in the top 30” I would say that was a satisfying result.
The picture gets worse when you look at Scotland, and Ireland (both GI and EI) where there are no claimed chaser score.
On the opposite side, in the USA there are some truly large scores (and not due to inccorect position data) showing what can be acheived.
Is it a lack of equipment or “I’ve worked them on FM so I dont need to mess around with SSB” or something else?
Today (Sun 25th) I worked 3 summits on SSB that would not have been possible on FM (thankyou Gerald and Peter). No change in antenna, just the mode.
Its good (from my perspective) to see more activity on SSB (wish there was more on 70cm SSB but small steps). It wil be interesting to see what happens when the months tick on and the weather gets warmer and longer daylight hours.
I’m also seriously considering re-entering things like the backpackers events. Not as a serious entry, but just to get those unique chasers in the log (also don’t need to worry too much about obtaining the locatior as its part of the contest exchange). I would consider the activity events on Tuesday nights, but Billinge Hill is not a place to be after dark unless I was wanting other activities after the contest 
After that waffle, my hopes are that more people will give SSB a try and we all get lucky when the E’s seasons kicks off.