abirdcall
(she/her)
A thousand times this. 6-8 combat encounters per day means that the average PC is killing 7 people per day. 49 people per week. More than 200 people per month. Each. It means that the average PC is having their life threatened more than the defenders in the Warsaw Uprising.
It also makes 5e the biggest combat grindfest in the history of D&D; even 3.X's 4 encounters per day was ridiculous and gruelling, and 5e adds in bounded accuracy so you are much more likely to face swarms of lower levelled enemies.
6-8 encounters makes no sense of anything approaching worldbuilding, and if that's what you need to balance the game then the designers screwed up.
Almost certainly, yes. Even 4e was massively helped by similar rules - and that wsn't a balance issue.
It seems that you are caught up in hack n slash, not 5e. It is based around 3 pillars. Social and exploration encounters are assumed in the game. So is downtime.