They are seen as some visible pro-bike token in a tit-for-tat enforcement war. I think they're fundamentally misconceived not only for the reasons that you mention, but also because I believe that they were essentially introduced in order to improve stop-line discipline among cyclists. Sadly, they have led to much-worsened stop-line discipline among motorists and cyclists' lack of stop-line discipline hasn't really changed as far as I can see. I think they water down the concept of the stop line.
They are seen as some visible pro-bike token in a tit-for-tat enforcement war. I think they're fundamentally misconceived not only for the reasons that you mention, but also because I believe that they were essentially introduced in order to improve stop-line discipline among cyclists. Sadly, they have led to much-worsened stop-line discipline among motorists and cyclists' lack of stop-line discipline hasn't really changed as far as I can see. I think they water down the concept of the stop line.