I personally enjoy my MacBook Pro (15-inch, Late 2016) but it has a problem with going to sleep after being plugged into an external monitor all day. I find at least 1/3rd of the time it has frozen after being disconnected from the monitor and I am forced to do a hard restart. Perhaps this is user error, but I do not remember having as much issue with the older generation. I use two Dell IPS monitors which are relatively new and connect via HDMI => USB-C adapter. It's an inconvenience which you shouldn't have to deal with on several thousand dollar laptops.

> Never had any problem connecting 3 different MacBook Pro's (across the years) to 3-4 different external monitors (Dell, LG, Samsung, etc) and to several projectors (including through a VGA adaptor and HDMI ones).

Consider yourself lucky.

> So for all of 2 seconds it takes?

Most times. But occasionally I've seen the OS seemingly get confused/stuck in the process. Flickering, moving windows into various locations on the screen, taking 10-15 seconds to get back to functional/usable.

Have you used multiple external monitors at the same time? My MBP often gets confused about which one belongs on which side

I ended up labeling the cables and making sure to use them in the same configuration this has mostly been solved. Still get's confused at times.