I don't follow what that means in reality for this subject though. Sorry if I'm being dim.
if puberty blockers no longer exist, I don't think that will stop people from believing that they are trans. It may or may not result in them obtaining cross sex hormones faster than if they'd have been on PBs first.
(and I would doubt that PBs would cease to exist entirely - they already exist and pharmaceutical companies want to drag back as much of their investment in R&D as they can, even if it's still ultimately a loss not a profit.
It may mean they don't get put through the trials that they should have been but haven't yet - but seeing as they have been prescribed without those trials and licenses for identity reasons rather than for precocious puberty, I'm not sure that pharma companies deciding not to pursue them will have that much of an effect. Cass report has already recommended that we hold off prescribing them, hasn't it? So the hold would remain indefinite, unless TRA pressure groups manage to convince NHS (or a private provider) to go against Cass.