Goal for retirement savings as a ratio of salary

I see these types of posts all the time, so why not one more? My total retirement savings goal has gone up quite a bit over the last few years due to inflation, primarily the increase cost to build a home where I plan to retire. My current view is that a good target is to have 20 times your income at retirement age. Meaning, if you retire at the age of 60 making $150K a year that you have at least $3M in a retirement fund. Lots of factors can influence that for each individual, but most people like to have a simple rule of thumb.

I'm curious how reasonable that sounds to everyone else.

Edit - It is quite funny to read the comments below. Either I didn't word my post very well or the vast majority of people replying don't understand what I am suggesting. It could be either since things sometimes sound better in my head than what I end up writing. I agree with what everyone is saying about doing actual planning versus a rule of thumb. I created a spreadsheet that I have been updating about once a week since the 1990's, so I definitely have been planning my budget, future income projections, expected return of investment, etc. It really is amazing that a 25 year old Excel file will still upload. The whole point to my post is if someone is looking for a ballpark amount they should have in savings to get an idea of when they can retire, I would recommend shooting for 20X what you expect to be earning when you retire. Yes, that requires you to be able to guess what your income will be 10, 15 or 20 years down the road if you are that far from retirement. It shouldn't be too difficult to make assumptions to calculate that. It's just a ballpark suggestion and not meant to replace actual retirement planning.