Why should technical capability to evade countermeasures dictate whether or not something is ethical? My view is that scraping remains ethical as long as your actions aren't causing technical problems for the operator. If anything, a retailer attempting to hide pricing data is what's unethical in my view.

This is often really good for your bot, because anti-bot providers are loathe to block what, as far as they know, is a residential CGNAT address. Sometimes you get more success scraping from home with Firefox or Chrome, than with an army of proxy networks.