As others have said, if we're about minimising risk I think we need to think about motor vehicle traffic, which in Germany causes about 12 deaths a day directly, not including the damage caused indirectly through pollution, which can directly increase people's risk of being adversely affected by Covid.
Secondly, I'd suggest we stop sales of Alcohol, as many call-outs and hospital admissions are due to alcohol abuse: that alone would probably tip the balance in favour of the NHS.
Finally, stop sales of cigarettes and tobacco because the last thing we need is people deliberately damaging their lungs when we have a respiratory disease going around.
As to cycling: I'm in a high(ish) risk group from C-19 because I have Asthma. in the years BC (Before cycling) I would have several colds a year; the ensuing cough would last up to three months and I'd have to go to the doctors several times for treatment because I'd often develop bronchitis.
When I started cycling this dropped dramatically to about three colds a year which would last a maximum of a month, Bronchitis was now an annual occurrence, and generally required less treatment from the doctor.
When I started cycling longer distances this dramatic drop repeated and now a "bad" year means one cold, which is usually gone within a month and requires minimal intervention.
In other words, cycling has helped my immune system in dealing with respiratory diseases and viruses. if I stop or even reduce my cycling, I dramatically increase my risk of catching C-19 and requiring hospital treatment.
I know that this won't be quite as dramatic for other people, but immune systems generally work the same, so I'm not convinced it makes sense to tell people to reduce a relatively safe activity which is highly beneficial for our immunity (to say nothing of psychological health), at least until we have dealt with other riskier and more damaging activities.
[ETA: I'm aware that I'm also very fortunate: I rarely have to ride on busy roady and most of the time I'm riding on traffic free cycle lanes or access roads, so arguably the risks I take are much smaller than many others on this forum...]