Agree! However, it's illegal. In order to penetrate the clouds, you have file an IFR flight plan
Not in the UK.
And you don't need an IR to file an IFR flight plan.
You can be quite legal flying in and out of cloud not speaking to anyone. In fact nobody would know you were even in cloud.
And alot of instructors in the UK have an IR or have had one because instructing really wasn't there first choice after getting a license. But as nobody will let them fly a shiny jet they did that instead.