I happened across a Reddit topic which mentioned the service, as some locals are unaware it exists. Tree removal can take a whole day and is complex work; for example, certain species require chemical treatment days prior to removal to soften the wood enough for cutting. Then there's pruning existing trees and planting new ones across a wide area, surges in demand following storms, etc.

When one post linked that PDF I'd expected a glossier, more generically formal report rather than these publicly-spirited musings. It's a good reminder that this sort of person keeps unglamorous things most of us seldom think about ticking along.