I think tree contractors have the tree’s best interest at heart. (First, do no harm.) trees take a long time to grow and have amenity monetary and environmental value while they are there, and that should be taken into account before it is trimmed. some are definitely fully on the side of the tree, eg “it was here first”
‘you knew it was here when you bought the place”. Topping a tree is really only done in a shelter belt or hedge situation, its done from a young age and regularly, topping a mature tree is kind of a mutilation of th tree structure , don’t get me wrong if it’s your tree you can do as you please, as long as your county hasn’t got it listed as a protected tree planted by George j Hoover Lincoln or someone, or its the last of its kind . if you still want a smaller tree, phrase it so it comes across better, you might say ‘shorten back the branches overall’ or use the word ‘downsize’. You could also say you want to pollard the tree. pollarding is a drastic but accepted tree treatment used for some deciduous trees which brings a tree down to a manageable size, remember maintenance will need to be carried out at least every two years. Preferably in winter. Search the term pollarding before you ask to have it done, as i said, its quite drastic , but if you want it done just find another contractor with his insurance all paid up whos needing a little, chain... saw... therapy..rrrrrRUMM!.... RRRRrrrr.rrrrr..rrrr RRRRRRAARRRRRRARRRRR Timberrrrr!!!!!