A friend of mine who is a web designer (who does work for billion dollar companies) ran his professional apps on an 8 GB M1 Mac mini for several weeks and he said it was OK. Not as good as his M1 Max 32 GB Mac Studio, but OK nonetheless.
Anyhow, I have an M1 16 GB / 1 TB for mainly business type apps and it's fine. My M4 iPad Pro sometimes feels a bit faster surfing, but for that usage, it's not a dramatic difference. I was using a 2014 Core i5 8 GB Intel machine with NVMe SSD before that and it was OK, but did lag from time to time. I found that with 8 GB RAM, if I ran a lot of apps, the swap size would increase, and once it got over about 1 GB I'd start to feel the delays due to swap. With 16 GB RAM, I don't get much swap at all with my usage.