The governments in different countries banned ANY gatherings of > certain number of people —> Czechia said 100, the UK 250, Poland 50.
But in various countries they have kept different options — smaller masses etc.
note that in India they are doing it to temples, mosques, gurudwaras etc. - even in Iran and Saudia they are stopping it.
and for Christian countries - the same precautions are being done by the denominations
I would prefer that people do this voluntarily than needing the force of the government to impose it on them.
And the more people do it out of caution and courtesy for others, the less likely we will need the government to make the decision for us.