I can confirm. It's not about actually doing something, it's about being seen. And it's best when you look tired. A pat on the back, a few お疲れ様でした. And it's certainly not about efficiency or outcome. Efficiency is virtually non-existent here, except in Western companies here. Working テレワーク pretty much equals to not working.
Over the last three decades and especially the last decade (the Fukushima accident) TEPCO has a history of missteps, reprehensible neglect, denial, and most of all creative work with their own documents or even more creative backdating of already existing documents to make everything look okay on paper so they can continue to get funding from the government here (sorry, actually just a bunch of LDP gerontocrats and 日本会議 members) to cover their fuckups. They have shown nothing but a series of lies and utter incompetence over the past decade. Anything they say should be taken with a very large grain of salt. They seem to want to forget that even for days and perhaps weeks afterwards they claimed that nothing actually happened and that it was a fraction compared to XYZ. And actually there was no problem, they claimed there was no problem even when people started moving. And then they pretended that they never said there was no problem and were transparent. But people here are not used to question or check whatever they are being told