No, didn't say that..
I'm not quite sure what your point is then.
Administrations can be competent or incompetent but I'm not aware that competence and political ideology are necessarily related.
An incompetent Labour administration may damage the NHS in England, but I fear that a competent Tory administration would
deliberately destroy it.
Anyway, you must vote with your conscience. If you have red lines and some Labour policies are on the wrong side of those red lines, then don't vote for them. However, I suggest "the Welsh Labour Party can't run a health service" should not be one of your red lines in a UK election.