The short answer is yes, Switch will surpass 150m. Here is the longer answer I gave a couple of years ago.
I've been told by many people that this can't possibly happen, but the counter arguments tend to go like this: "A Nintendo system can't sell that much because Nintendo." or "Switch can't outsell the PS2 because PS2". The arguments are just based on a person's gut bias instead of actual reasoning. Occasionally, someone presents data, but data can't give an accurate prediction until after a console is past its peak. Switch is not yet past it's peak, so data is only of limited use right now. Rol is the only other person I've heard actually try to use some other method like business strategy, and I believe he thinks Switch is going to sell 150m+.