Russia has already started rebuilding Ukraine, at least in Mariupol. Even publications that hold a dim view of Russia have admitted as much. Here's one that I think was particularly good as it offered photographic evidence:
After months of bombing, Russia starts rebuilding Mariupol | elpais.com
'It’s like the USSR’: residents on life in Mariupol a year since Russian occupation
People tell Guardian of ‘primitive’ living standards, propaganda in schools and constant risk of arrest
https://www.google.com/amp/s/amp.th...e-in-mariupol-a-year-since-russian-occupation
On the other side, we have stories like this:
SBU GQ in Mariupol, torture and executions | Donbass Insider
School starts in Mariupol on 1 September, symbolizing a gradual return to normal life | Donbass Insider
Mariupol - the first families receive the keys to their newly built flats | Donbass Insider
An excerpt from that last link:
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Following the battle of Marioupol, many houses and flats were totally destroyed, leaving many families homeless. As soon as the fighting was over and the city was cleaned up, the construction of new housing was launched as a matter of urgency in order to rehouse as many of Marioupol’s inhabitants as possible before the onset of winter.
On 9 September 2022, we were in Mariupol to witness the handover of the first flats to their new owners. Several families, whose homes were completely destroyed, were chosen to receive these first flats.
Among them, the Smola family: Sergei, Evgenia, and their three daughters Serafina, Sofia and Ksenia. Their emotion is more than palpable and they all say they cannot believe that all this is real.
https://odysee.com/marioupol-clefs-...b43c822f7ec8789a967858?src=embed&t=280.173706
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Now, these stories don't negate the article you linked to. But there are a -lot- of stories out there, and based on what I've read, I suspect that the majority of Mariupol residents are doing better now that Mariupol has become a part of Russia.