Earlier quoted context omitted.
4 hours isn't that long, is it? plane cannot beat that by much
If it only took 4h, experience shows otherwise. In any case, that was just an example, I am not doing Germany - Portugal by train, unless forced to do so. It is more than 24h.
That's the point, we need to expand the rail network to make longer distance trips shorter, more comfortable, and affordable. Flying can't continue to be the default option.