Furthermore, the sanctions demonstrated that there is sovereign risk associated with purchasing Western airliners.
Finally, IIRC the airline's regrets were largely related to the poor early reliability of the French-built parts, specifically combustors, for the Superjet engines. It remains to be seen how the new Russian engines will perform.
And airlines in most countries have far more to worry about buying aircraft whose maintenance depends on a faraway pariah state and that are not certified in Europe than they do about US sanctions targeting them. And even if they do, still not necessarily more difficult to circumvent the sanctions (as Mahan Air did with wet leased 747s) and access a worldwide parts supply and MRO market than rely on being able to maintain and sell on your Russian aircraft at reasonable price and timeliness...
It would also be surprising if the new Russian engines were competitive on performance with new Western engines, and likewise with other components they've had to switch to domestic manufacture for.
By that you mean a state sanctioned by the US and the EU, which together comprise about 10% of the world's population.
Even Iran is flying old Western aircraft
Trust me, we're not rushing out to buy shitty Russian aircraft as a hedge.