Cyclists should follow the highway code and be considerate to other road users.
But this is a thread opened by a 'cyclists are annoying' post followed by people saying we should fine/penalise/register/ban/make them pay insurance.
Many of the examples like cyclists riding in the middle of the lane are responsible and legal cycling, it's the drivers who are revealing they don't know the rules.
Driving penalties tend to be a few hundred quid, a few penalty points, even a case that goes to court and involves high speeds, cars that aren't roadworthy or insured etc - fines are not that high.
A proportionate cycling penalty would be less than £100. The cost of registering, licensing, administering the system would far outstrip that. And besides, we need more people to cycle because there are too many cars on the roads and cars have many negative health consequences. So anything that puts people off cycling is bad.
As I said before, getting more people onto bikes would do more to improve behaviour than any penalty system.