I'm not sure I get how it's bandwidth theft to stop a commercial in a linked video but I'll take your word for it. I'm not into the tech stuff.
It's not so much tech as it is philosophical. Ad blockers block the ads that pay for the bandwidth you are consuming from a given website. So, by blocking the ads you are getting the content for free. You are stealing the bandwidth for that content. That's selfish and arrogant.
By the same token (the flip side of it, actually), the astonishing selfish arrogance of some advertisers who think nothing of appropriating the limited, capped bandwidth of users is equally repellent and unpalatable.
The reason for the first ad blocking measures was to deal with the precious bandwidth they consumed, and they kept track of the bandwidth saved. That same reason is still the bedrock of ad blocking software, though it has necessarily had to evolve to deal with issues beyond merely bandwidth, such as popup ads and other intrusive and obtrusive ads. If a certain level of acceptability is exceeded, there will be a backlash, whether it's advertising or anything else.
https://acceptableads.org
I think EO has been pretty good overall in that respect.