The impression of a good number of volunteers is that the Professionals in council are woefully unprepared to serve their customers. We see no Customer service, Poor or non-existent communication, lack of quality programs (you know good programs actually improve new members and retention), no innovation, not really knowing how to leverage their 99% volunteer workforce, blame the unit for not making goals on FOS or popcorn or not signing up for events when no information is provided on theme, location etc. Do you get training in these are or do the DEs/DDs/SEs just ignore it?
Also the Franchise model on individual feifdoms that councils have is outdated and there no real way to transfer your unit to a different district or council when you get poor service like you can in other areas. So units "retrench" and just do their own program and only interface when absolutely necessary because they see no value added.
I don't see anyone "hating" professionals unless they are vindictive and retaliatory. They all seem to use the "thank you all for what you do in scouting" tag line but it is used over and over sounds insincere.