Moving the file elsewhere won't fix it. They are serving terabytes of traffic on Access Denied, it won't go away if that changes to "Not Found" instead, the developers seem already entirely ready to ignore their adblocker just not working.
In general, it is easier to setup filters after differentiating legitimate from nuisance traffic. For example, fail2ban looks at the log of errors from invalid hits, and bans the IP or entire ISP block ranges for 5 days. This ban than get propagated to the rest of the web via spamhaus.org listing.
i.e. the users start to see the worlds internet become unreachable, as admins start to block traffic at the NOC's routers, and so on... India knows about Karma.
I am more surprised the app store for the apk isn't getting sued for theft of service.
I will also point out that if you fail2ban the IPs requesting the spamblock list, it could become worse if the browser just retries endlessly in the background. The traffic for a 404 page could be much smaller than the traffic of the very same devices trying again every few seconds, constantly, instead of only checking that 404 every app restart.
As a side note, some people build spider traps that reply with a pre-baked bzip file as a spoofed HTML compressed response. Thus a client program dutifully decompresses a few TB sized document, and browser exits due to memory issues. Note most modern Browsers are wise to this trick these days, but I doubt a dodgy plugin disk-usage limit check would catch a client side storage-flood. People shouldn't do this though, even if it is epically funny and harmless. =)
On your side note; EasyList probably does not want people to start suing for starting to distribute malicious content to users (and crashing your browser on purpose is arguably malicious).
1. take the top 200 most popular websites in the given nuisance area
2. add ban rules to a version-B list that also includes all social media, search engines, and Wikipedia.
3. Look at the user-agent string for that specific problem client, or extreme apikey quota abuse
4. Randomly serve version-B filter list that breaks the browsing experience after a frequent update. Increase random breakage until traffic rolls off to normal levels.
The TOS for the ban list file does not specify which sites it will ban, and most users will just assume it is the App that is broken (it is already). People should not do this either, even if it is also funny and relatively harmless. Also, suing people while participating in an attempted crime probably would not go well. =)
Have a gloriously wonderful day =)