It only applies to grass root levels, so nothing to do with the international game.

Seems like there are some restrictions but it lacks the RFU's rule of risk assessing transwomen over a certain size/weight.

I don't agree with it but it seems that only 30 transwomen are looking to participate in England. The attention its getting is completely disproportionate to the size of the issue. The unions have now stuck a rule in place and put the issue to bed. Grassroots womens teams can always refuse to play a team if they turn up on a Saturday with a gigantic transwoman. You cant force women to play against a transgender team if you want to. Fixture cancellation against teams that act like a bunch of aresholes are frequent in the armature game.

Teams fielding ringers would be a more frequently encountered issue, or ones that claim they don't have an experienced front row to avoid competitive scrums. Issues that effect thousands of games don't get the same attention as an issues that affect a handful as it's not emotive.

I'd question, if (presumably effeminate) transwomen really want to play rugby in any significant numbers and how much difference it would actually make?

Seems like its largely a emotive and theoretical argument for a problem that affects so few people it's almost impossible to identify anyone whose directly affected by it.

Typically of todays society, where everyone gets really worked up by issues that don't really affect anyone's day to day life. Deciding things are absolute truths based on what their side of the media have told them and getting outraged.

I was being a bit tongue in cheek but I was interested in your reply.
This has been quite badly affecting biological women in a few sports.
The main place I remember this coming up was Aussie Rules - obviously pretty physical. A few seasons ago a lower league man became trans. She then tore it up in the women's leagues. I think it's Helen Mounie, I could look it up but you'll find it if you like.
Taking a case to play in the highest pro league right now. Helen is a fine size with a nice set of hair.
I can't see it being fair on women in sport and there's a lot going on in underage women's sports all over. US athletics trials are one but different rules for different states.
Of course, if you don't agree you get called transphobic - which shuts down debate. Plenty of parents in the states are not laying down and taking it. Plenty of court cases - even federal, perhaps supreme court now (I think it's called that).
Certainly is an emotive issue for those on both sides. I'm old enough to not be directly affected and my kids aren't that sporty, but I do find it an interesting debate that's going to be with us for a while. It reflects on wider society and all the current labelling kind of rolled into a small but trans-national and trans-sport area. The outcomes will be major for quite a lot of people.