They're tossing the dog a bone to make it shut up.

It will work, but not for long. The facists dogs will come back to get more from the hand that feeds.

No, on immigration the AfD is more extreme.

This planet cannot sustain 8billion+ people. Poverty and war cannot be fixed by moving everybody into Western countries. Unfortunately, fewer people are needed. The fascists have long recognized this, and they want to keep people on a racial basis. They are having their way because Liberal Democracies failed to keep people on a behavioral basis. It is wrong to discriminate by birth. It is also wrong to not discriminate by behavior.

I'm not arguing for or against any of those positions here. I'm showing how some of the left-wing positions are so unpopular that yes, adapting more centrist (close to the right) position is actually beneficial for the left. Basically, most of the time left-wing politicians are trying to adopt right wing positions hoping that they will steal some votes from the right (which never works) but sometimes, common sense policy is actually closer to the center because the far-left lost touch with reality on some issues.

Spanish government tends to run to the left to mobilize voters (exception in Europe). They granted amnesty to all the migrants in Spain very recently which puts them to the left of pretty much all the other countries in Europe but even they will not go as far left as Sumar would like because they know it's not what vast majority of voters (both on the right and left) want. EU sees the same thing.

P.S. As another example, the far-left would say that saying "Islamist homophobia is a problem" is racist and Islamophobic so even you adapted more centrist position here.