Apple-Silicon 2020 M2, and M1 13-in MacBook Pro and Air and similar models with M-series (plain) processors are extremely-capable entry-level computers. They can support the internal display AND an External display up to the previously unheard of size of the Apple 6K display at billions of colors. But only ONE in addition to the internal display.
This may not match the way older computers forced you to work, since older computers were not able to support a really large External display. But it is NOT a defect. The spec was available long before you could purchase the computer.
The Apple standard for its built-in hardware-accelerated displays, makes them suitable for full-motion video for production/display of cinema-quality video with NO dropped frames, and NO dropouts or partial-blank scan lines due to memory under-runs or other issues. This requires a hardware rasterizer/display-generator for each fully-accelerated display, supported by Huge memory bandwidth to refresh each display 60 or more times a second.
If you need more hardware-accelerated displays than the built-in and ONE External display, and an un-accelerated iPad if desired, you probably need a more capable computer.
If you are doing ONLY program listings, spreadsheets, stock quotes and other slow to change data, there are some other solutions, but they require you to make some strong compromises.
Executive summary: More than ONE additional Hardware-Accelerated External display can NOT be added to the entry-level 13-in or 15-in M1 or M2 entry-level Systems.
