Pretty similar by my reckoning without knowing everything about either event, the only difference being that although the rules might not have been materially too different from may 2020 to April 2021, peoples attitudes towards them and willingness to follow them was. I personally was sacrificing far more in may 2020 so it hits home more if 'they' weren't doing the same.
As you say though, cakegate is the tip of the iceberg in terms of downing Street.