SImplification was driven in many areas by Legislation - not just the Tax / Charity issues but Health & Safety, Food Hygiene etc
Easier not to do food than to comply with the mass of legislation re food temperture storage/hygiene etc etc
Simplification was sold to elders in the 80s as reducing paperwork - well it did for the branch offices but it moved the work out to the congregations - PO & Secretary taking a lot more work on - Simplification was a standing joke in congs as letter after letter flooded in with more work for the service committee to handle in coping with the mass of legislation. Changes were made to move responsibility for coping with the mass of new legislation from the WT (who made the rules and told you what to do in every case) to local elders who were held (by the state authorities) as responsible for their actions - in effect local elders made scapegoats for any failing as they had no room for manoeuvre in matters of legal compliance, but the branch abdicated any responsibility for its directives.
Assembly time became dull and more boring as the opportunities to volunteer and meet others (especially for young ones) virtually vanished - arrive - listen to music - sing song - hear prayer - hear talks "Do More" - song - sandwiches - song - more talks "Give More" - song - go home not much fun