Yep, Welsh Labour clearly learnt the lessons of Holyrood and are determined to avoid a Scottish scenario playing out in Wales. They are also helped by the fact that Labour is unlikely to get any sort of realistic shot at a Westminster majority anytime soon, so the periphery is quite free to set their own agenda. English Labour can quietly support a breakup of the Union that will then try to tie around the necks of Tories and SNP, they have little to lose now.
[0] - https://nation.cymru/opinion/this-was-a-bad-election-for-pla...
[1] - https://www.thenational.wales/news/19303406.plaid-cymru-noth...
[3] - https://www.walesonline.co.uk/news/politics/mark-drakeford-d...