Tao will implement master nodes in 2018
Let's say I'm not holding my breath.
Also, why the sudden tech change? Why is it obviously The Best Idea Ever
now, and it wasn't before Christmas? What changed?
You're quoting something from October 2017. Obviously timelines were pushed back. The new codebase is already prepared and is coming in late March last I heard. Feel free to hold your breath or otherwise, up to you.
Soopy was announced as a core developer working on a major update to the codebase last year in the slack:
Jan 22nd update
community member Soopy took over main development of Tao core in 2019
So this has been planned for some time, I didn't know about it to post about it. I just pass along what info I have. I'm not an equity holder in any of the companies, so I don't have insider info. If I did, I wouldn't be able to share it any sooner than I share what I do get told.
The codebase hasn't been updated since 2018 if I recall correctly, so it needed a refresh at a minimum. Switching to an Ethereum fork will allow Tao to do what's always been planned, including having artist tokens on the Tao network itself.
It's funny, I've previously gotten criticism from one of the other troll accounts because ODB was issued as an ERC token instead of native to the Tao network, now I'm getting complaints that the software is being updated to allow it to be moved from Ethereum to Tao.

Looking forward to the new codebase in March.

Yeah, about Soopy... I got curious, and did a little light googling. I mean I'm sure definitely-not-a-scammer Bryce Weiner has vouched for him, and everything is Definitely On The Level, but, well, he doesn't seem to be the most reliable of devs to walk the earth.