All this, whilst they are still also claiming the business rates grants, the 80% of annual earnings, and their own staff costs at 80%.
Except that council maintenance contractors probably don't have business premises - they're more likely to work from home, so won't get the business rates grant.
Except that many won't employ staff - they'll be sole traders or they'll in turn use self employed contractors, so the furlough is irrelevant.
Except that the self employed don't get 80% of their income - they get 80% of profit after expenses - many of those expenses continue (equipment/vehicle leasing, subscriptions, insurance, professional fees, websites, mobile phone contracts, etc etc) so the ongoing costs have to come out of their "profit" meaning they have a lot less than 80% of their usual "take home".
But don't let a few facts get in the way of lazy stereotyping.