If you're over 100m net worth and get 5% returns, you get over 400k/month income on capital. At that point it might not be worth your time and attention to save $50 or even $500/mo if it takes any effort.
Exactly, to use the same math from the linked comment, it's less like comparing $500/mo and $50/mo and more like comparing $500/mo for the high net worth folks to $0.05/mo for someone making a more average salary.
You could have a single part-time minimum wage job and you're not going to waste your time worrying about $0.05/mo. 60ยข a year? Please.