Only if you stream via your TV and not a separate box. Obviously that's part of what they're banking on, but I don't know anyone technically knowledgeable who does that (not least because TVs are notoriously bad at updates and incompatibility often breaks those functions soon after purchase anyway). John and Jane Viewer used to manage just fine with separate set-top boxes for their satellite or cable or whatever, so I don't personally see any problem with having separate (and therefore separately upgradable or replaceable) boxes for connecting to online services, while it does have clear advantages.

Just stream using a separate box connected over HDMI.

And then that device will do the same tracking/spying as the TV

They might try, but any such device will likely be much more interchangeable than the TV itself, with more competition. One significant problem with the TV industry at the moment is that competition has failed and essentially they're all at it.