I don't know, maybe. But Kevin was different though. He completely left with no intention of returning, then only wanted to come crawling back after covid ruined his tour plans and he had an unsuccessful year. Not quite the same as taking a planned year of absence to have a child.
As for the practicalities, she's not a single parent. Raising a child would be a two person job between them. Not quite the same, but Gorka went the whole last season without seeing Mia so it's not like other parents on the show haven't made sacrifices during the season's run. During a normal season she'd at least still be able to see the kid when she can.
Anyway, I don't think they'll be getting pregnant for a few years anyway so it probably won't even be an issue. They probably won't even start trying until after she's left so the issue is practically non existent imo.