No I don’t and like pointed out by @ShadowFist , that approach doesn’t even make sense here.
It does not really matter. It is spam/advertisement covered with the help of an AI slop generator. I used to flag posts like this but even mods/admins fail for this kind of slop in the past and according their own roles AI (slop) content is allowed 
Beside this spam post was very easy to identify. First and only post ever from @Lemon_HomeTech - only weird thing is that the read time of this account isn’t <1min (default for good spammers) but here it is 5min. This person probably drifted a little away while copy&pasting AI slop 
You can flag any suspicious AI spam.
My comment was off topic, about energy needed for wireless tx.
As written I used to do this. In the past all spam reported was quickly removed. But since AI slop days it happened that moderators wrote me it is OK, it is just AI generated. In the beginning explained the mods why it is not “only” AI slop but actually spam…
For example @Lemon_HomeTech claiming in his profile being from Los Angeles, CA (meanwhile removed from his profile) while actually the company his advertising from is:
Company Name: Shijiazhuang Kelton International Trade Co., LTD
Operating Brand: X-Lazy Home
Email: [email protected]
Address: No. 2223, Floor 2, Hall 1, Lecheng International Trade City, 36 Tianshan North Street, Chang’an District, Shijiazhuang City, Hebei Province, 050000, China
Business Hours: Mon – Fri, 9:00 AM – 5:00 PM (GMT+8)
Beside obviously his only (spam) comment is posted under an inactive thread which doesn’t even correlate to the advertised product (the AI slop generator could have made this better!)
ESPHome DOES have Deep Sleep mode which would likely accomplish this task perfectly. See Deep Sleep Component - ESPHome - Smart Home Made Simple
But you are correct that it’s not exactly the most efficient, which I suppose is why most manufacturers end up with specialized chips with proprietary FW.
These type of switches generate energy in 100uJ range and all conversions + storage eat major part of it. What remains usable for MCU is not enough even to boot ESP32, leave alone sending some wireless packets.
Yeah spot on. Even in deep sleep ESP32’s boot cycle and Wi-Fi stack init alone draw way too much inrush current for a kinetic harvester. Most of these kinetic setups use sub-GHz RF chips designed to boot and send a payload in literally a few milliseconds before the tiny capacitor drains out.