Earlier quoted context omitted.
I don't think they sell 128GB macs any more do they? They shouldn't! 512GB seems to have been enough for me for the last ten years or so, if I need more storage than that, it goes on a different machine or cloud storage of some form. I haven't found it restrictive at all. I had my 2013 MBP (i5/8/512) in active use until 2020 when lockdown hit and I stopped needing a laptop for a while. Now I'm on a M1/16/512 Air, and…
They don't sell 128GB any more but 256GB isn't much better. Pretty much everyone apart from the most casual users is going to fill that up.
I do have a 4 TB NAS at home, but that's backups and childhood photos, no daily-driving stuff. I don't consider myself a casual user.