Yes, N+1... I figured I'd sit contentedly at "1 bike" and not feel the pull of N+1 for a long time... now I feel slightly ahead of the game. (Though, suspension bikes and carbon always call to me in the shops, so -- who knows....Glad you made it through without flood damage.
NCTE make the Thun X-Cell torque sensor and Justin's page on the NCTE sensor he sells mentions something you might need to consider when you begin riding your ebike again: "When you pedal with the left crank it registers a full torque signal, but when you are pushing with the right pedal the force goes straight to the chainring, it doesn't couple through the spindle...for most riders it means a delay in power assistance coming in if you start pedaling with the right leg." Source: https://www.ebikes.ca/product-info/advanced-pas-kits.html#torque-sensors Let us know if this is accurate when you get your bike back.
Does that Grin write-up refer to every Thun BB? (It starts out "the original sensor...") I'll be curious to see (if it applies to the Thun model shipped) whether I can detect that left-vs.-right starting-up difference...