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Wouldn't put too much importance on this.

Deripaska, and few others - called for "end to war" (as much and as far it was possible in Putin's Russia) from the very beginning of SMO.

Russian Oligarch Deripaska Calls For End Of War Against Ukraine - March 02, 2022 (less than 10 days after 'Putin's War' started)

|------- Russian billionaire Oleg Deripaska, known for his close ties with President Vladimir Putin, has called for an end to the war in Ukraine.
"Peace is very important! It is insane to prolong [peace] negotiations!" he wrote in a post on Telegram.

Deripaska warned of potential accidents at any of Ukraine's nuclear power plants, which might endanger Russia, Ukraine, and Europe.

"For those who do not understand - any incident involving those objects will be remembered by our successors in Russia, Ukraine, and Europe for some 200 years to come."

Deripaska is just one of several Russian oligarchs - who have been targeted by Western sanctions - to call on the authorities to stop the military attack against Ukraine. Mikhail Fridman, Pyotr Aven, Oleg Tinkov, and Aleksei Mordashov have already publicly called for a cessation of hostilities.
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Two Russian oligarchs call for an end to Putin's war - March 1, 2022

|------- Russian billionaires Mikhail Fridman and Oleg Deripaska have broken ranks with the Kremlin and called for an end to Russia's war in Ukraine.

Fridman was born in western Ukraine. "My parents are Ukrainian citizens and live in Lviv, my favorite city. But I have also spent much of my life as a citizen of Russia, building and growing businesses. I am deeply attached to Ukrainian and Russian peoples and see the current conflict as a tragedy for them both," wrote Fridman.

Fridman has a net worth of $11.4 billion and is a Chairman of Alfa Group (with subsidiary Alfa Bank) a private conglomerate operating primarily in Russia and former Soviet states that spans banking, insurance, retail and mineral water production.
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Deripaska also called SMO a "colossal mistake" few months later, and is a known critic of war.

Of course, it's not mutually exclusive for all of them to want the end of sanctions as well, even if "Putin's War" may actually help their businesses in the short term.

It's been understood long ago that the system of oligarchs serves Putin and his goals, not the other way around. He put not too fine a point on it when in 2003 he had then-richest oligarch in Russia - Mikhail Khodorkovsky of oil/gas company Yukos (which at one point paid about 5% of all taxes collected in Russia) - arrested for fraud and sentenced to 9 years, later extended his sentence to 2014, only to pardon him in 2013. Yukos was immediately declared bankrupt and sold in 2004 auction (which lasted 2 minutes) to an unknown company which was registered only two weeks before and had less than $300 in assets, but was loaned $9B by state-owned Rosneft, to outbid state-owned Gazprom which somehow "lost" its financing a few days before the auction. Rosneft later formally "acquired" the assets of new Yukos "owner" for debt. Oligarch Igor Sechin (aka "Darth Vader"), one of the top siloviki and until recently (before his son died in February 2024 of "blood clot" under "bizarre" circumstances) heir-apparent to Putin, is the CEO of Rosneft.
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