Some rational people in Europe might be attracted to policies that fought back at muslims in their midst, as Putin appears willing to do.
Putin has done nothing to “fight back at muslims”, quite the opposite. He, for example, opposes the legislation to introduce visa regime on the border of RF with the Muslim neighbors, preferring some idiotic notion of Russia as a multi-ethnic state so that the Muslims become also-Russians.
The Muslim citizens of RF are Putin’s strongest political base. Crimean Tartars are a special case and have their own reasons to want to stay in Ukraine.