Yes the window can be resized, but the font size and scaling remains the same.
Yes you can zoom to 200% and then maximize the window, but it also applies to the main GUI as well as the web terminal.
Hopefully I explained well enough.
Using an SSH client works fine, but there are times when it is much more convenient to use the web terminal. It used to work fine in the previous version, but since the major update to 6.9 the web terminal hasn't displayed well in certain situations such as mine.