Salam.
I think, many verses of the Quran are timebound. Addressee of the verses are purely the then people of Arabia, when the prophet was alive. Yet we can get suggestions through those verses.
This might be that type of verse. The prophet needed immense support from his fellow believers regarding building a new community, actively participating in war, charitable activities etc. So it was the guidence from Almighty for that time.
Devotion to prophet, through activities, is not relevance now, as he is not with us. But we must acknowledge his unbelievable effort, his sacrifice to fulfill his duty of risalat. We must love him, make dua for him, that's ok. But putting his name beside God in mosques looks very odd and it is some sort of shirk, i think.
Allah knows best.