As for now, when I need to travel to Germany, I just book tickets through the national carrier of my home country, which for cross-border tickets often turns out to actually be cheaper than booking through DB. Thankfully I don't live in Germany proper and my need for travel there is not that high (once or twice a year at most) but I wonder what would I do if I had to move to Germany and use trains there more often.
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Gotta love it.
The finger-wagging about "Use of developer or inspection tools" is just outrageous. Akin to accusing users of thought crime.
The only solution to all this will be through elections and laws.
At which point you should contact your attorney general, and work to ensure such efforts face legal challenges at every turn.