Well gentle parents definitely like really long explanations don't they, judging by some of the posts here - no wonder their kids switch off
I do think sometimes it takes longer to explain what you're doing than it does to do it, but this is definitely a danger of 'gentle' parenting. I could be wrong, but I think that the book "How to Talk To Kids So Kids Will Listen and Listen So Kids Will Talk" basically espouses a gentle parenting approach (without calling it that, that I noticed - but they are definitely anti-punishment). They have a chapter on how less is more - things like the child comes in and leaves the door open. Instead of going on a long explanation of heat and cold and energy consumption, one can just say "Door!" The child looks about, trying to figure out why the parent is saying 'door', sees the open door, realises the problem, and closes the door.
My approach is in the heat of the moment to be short and sharp, and later at a quieter time I may sit with DD and have discussions about why/how about behaviours, what I did, what she did, what she felt and so on. But only once she was old enough for that to actually mean anything.
I've fallen down an internet rabbit-hole of parenting style quizzes, and curiously have not actually seen 'gentle' listed anywhere. I've found Attachment, Authoritarian, Authoritative, Democratic, Flexible, Lax, Permissive, Positive, Rigid and Strict. Apparently I'm Attachment and Authoritative and Democratic and Rigid and Strict. The one site that differentiated 'positive' from 'authoritative' nearly made me lose the will to live in reading the 'positive' parenting approaches - I got bored half way through, just reading a quiz answer! I wonder if I may not be quite as 'gentle' as I thought...