Personally I wished they had it backported to previous versions too, because it's rather convenient!
What is quite sad is that we cannot add it ourselves as it's so simple of what they have done:
func (wg *WaitGroup) Go(f func()) {
wg.Add(1)
go func() {
defer wg.Done()
f()
}()
}You can just use golang.org/x/sync/errgroup instead, which has always provided this style of use.
errgroup also has other niceties like error propagation, context cancellation, and concurrency limiting.
You could also just make your subtask function return nil always, if you just want to get the automatic bookkeeping call pattern (like WaitGroup.Go from Golang 1.25), plus optional concurrency limiting.
Also note, even if a subtask function returns an error, the errgroup Wait blocking semantics are identical to those of a WaitGroup. Wait will return the first error when it returns, but it doesn't unblock early on first error.