Agreed on all points except [2], I run many scrapers and sites change _all the time_, often changing markup for seemingly random reasons. One government site I scrape changes ids and classes between camel and snake case every couple of weeks, it makes me wonder if it's a developer pulling a fast one on the client.
Hearing this makes me suspect some tool auto-generates the id's and its config is getting changed every couple weeks by some spaces vs tabs battle between devs.
