You're conflating the question of Donbas status/disposition with the election of Janukovych. The range of status options is about half a dozen models ranging from the current Kyiv centricity to full-blown secession from Ukraine. No polling - I've linked them in prior posts - before or since 2014 has show more than a small minority favoring secession, but a continual majority favoring remaining Ukraine, even if desiring more autonomy of everyday governance and economic matters under local governance.
In fact, the counter-referendum held in Donbas in non-separatist areas of Donetsk oblast of May 11, 2014 saw 2.9 million voters of 4.3 million populace participating. To the question of
"Are you for maintaining your territorial community within Ukraine and reunification with the Dnipropetrovsk Oblast?" (Dnipropetrovsk is the Ukraine oblast adjacent to western Donetsk and Luhansk and is 80% ethnic Ukrainian and 18% ethnic Russian. Reunification means dismantling the LP/DPR insurrection and remaining Ukrainian, and whether to be annexed by Dnipropetrovsk oblast)
Yes
69.1%
Against reunification and against separatism
27.2%
No, separate
3.7%
Now,
according to the assertion you draw from your map there was no greater hotbed of Yanukovych support than Donetsk.
Yet, 96% voted against separating from Ukraine and only 4% for separatism. There is no correlation between Yanukovych election support and desire to separate from Ukraine.
That, despite nearly a decade of Russian influence campaign to erode Ukraine sovereignty - including issuance of roughly a million Russ passports, clearly violating Minsk and Budapest - continual military incursions and armament, propping up thug LPR and DPR governments who coerce, disenfranchise, and criminalize support for Ukraine to force their migration and cement areas of control. Zelensky factually termed it an invasion of eight years by Russia.
There was no coup. In the face of massive protests against his rejection of the EU Association Agreement, cowardly Yank left his post and a governmental vacuum which the Ukraine parliament filled. He should have been able to remain in eastern Ukraine with all that support, right? Yet he reverted to Russia within a week of leaving Kyiv instead of "New Russia" as Putin likes to refer to E. Ukraine. When Putin refers to Ukraine - as a whole - as an artificial construct and that it is Russia inhabited by Russians, he makes his intent clear. This isn't about and LPR/DPR 'independence', but Russian dominion of Ukraine.
You can keep telling us what Putin really means, I take him at his word and actions.
You're fond of anecdotes; let's hear from Donetsk residents calling for Yanukovych to resign in Dec. 2013 following his failure to allow Ukraine to exit Russia's decrepit, corrupt orbit: