This was never not the case for me.

In CRT era there was just no contest, the resolution (the amount of data displayed) alone was worlds apart. Yet I only ever had one CRT connected at a time.

Once the LCDs became minimally viable for me I just never disconnected the previous LCD when upgrading/buying another one (I’ve always been a “main screen + support screens” sort of operator).

Finally LCDs and OLEDs became just too big (and tiling much much better) to have “too many” monitors.
Yet there are times when I wish I had a mini monitor (one of those candy bar screens where I would just have Signal or something, about 480×1920 pixels, they are cheap but I then remember how silly the need is and don’t want to further consumerism for needles thighs).