I interpreted the GP's comment less as a moral claim ("the DMCA bot is good") and more as a claim that the DMCA bot's failure is a strong indicator of internal instability (given that it sits directly at the intersection between Twitter's profit interests and microservices architecture).
Put another way: being unable keep a little bot running, one that keeps an entire industry happy, doesn't bode well for other components of the service.
It seems self-evident that the bot was considered low priority, since it isn’t working anymore. But nobody is disputing that: they’re saying that the fact that it is low priority does not bode well.
If it was a prerequisite to land $100M ARR from all the media properties’ marketing budgets to advertise the multi-billion dollar pipelines of the movie and entertainment industry, that lil’ bot was the gate to $11,415 per hour of revenue at risk if its uptime failed to sufficiently please the attorneys and auditors from those customers.
Put another way: being unable keep a little bot running, one that keeps an entire industry happy, doesn't bode well for other components of the service.