The announcement of an indefinite ban is a step forward.
There are multiple threads to what happens next.
The first is proposed puberty blockers trial which in practice may or may not happen. We shall see. Even if it does happen [horribly unethical] we know what it will show definite evidence of real physical and mental damage from puberty blockers, alongside dubious positive benefits.
The second is the assembly of evidence from those who have already taken the blockers. Previously this data was not gathered under the Tavistock, but this information gathering is starting to happen. We shall hear about the results. They are going to be negative of course for the most part.
Thirdly and perhaps most importantly is the political element. It seems to me Streeting is using the TAs own weapons against them in the way they used moderate language to shift ground and undermine women for years. Notice most TAs regard Streeting as basically being Hitler while rhetorically he appears to give ground to them in certain ways. The thing is time is on his side. Their extreme anti-Streeting hatred undermines their ability to influence policy. The TAs are basically undermining the gender moderates, actually far more dangerous than many TAs because they seem more reasonable, by either pushing them to break with Streeting or become EVIL themselves.
Streeting can say he is open to new evidence over time, but the TAs will not provide anything, because they have nothing. Remember the BMA council saying they would have evidence by Xmas that Cass was wrong. Nothing turned up so far.
By the time the ban is reviewed in 2027, there will be nothing new, BUT the evidence that they are a disaster will be even better documented. So Streeting can look even more reasonable.
This political element is key. Note the SNP see the writing on the wall. They have caved already. So that leaves the Lib Dems, Plaid and the Greens who might be fighting the 2028 election on pushing for experiments on kids or instead come round to saying Streeting was right all along. Politically this is a useful wedge issue for Labour. On other issues center/left parties have serious criticisms of Labour, but this is an issue where they can potentially morally grandstand and also neutralise some right wing rhetoric too.
Personally I think Streeting peaked long ago. He is a clever politician though and knows that seeming moderate is in the long term beneficial for him. He wants to be Prime Minister.