The current, more positive, pace of global growth is predicated on the stimulatory settings of monetary policy in place in most countries. That is, these policy settings have been necessary to deliver these growth outcomes. They have countered the headwinds that have been present in the global economy over the past decade.
The headwinds have abated but it is not clear they have yet switched to be tailwinds. One potential exception to this is the US. The fiscal stimulus that is in train this year and next is being delivered in an economy with limited spare capacity.