The precedent for rioting is always been that the courts treat it as just about the most serious crime anyone can commit. Mass violence against the state has always resulted in severe consequences. When it is considered bad enough, the state will deploy the army, most recently in Northern Ireland.
All the people who are acting surprised about what is happening to rioters in court, clearly do not remember 2011, or 1981, or any other riots.
Sentencing Guidelines for rioting are that the person will go to prison. Hence, no bail.
https://www.sentencingcouncil.org.uk/offences/crown-court/item/riot/
If people were less ignorant of the law and history, they would be less inclined to riot. Nothing new is happening at the moment with regards to speed of sentensing and rioters going to prison. All the news reports and commentators who say otherwise need to read up on the subject.