I wouldn’t be surprised if increasing popularity leads the FIG to ban this. Jade Barbosa has recently become the latest gymnast to do it at Brazilian nationals.
Looking at the results book from Liverpool though I wonder if some judges weren’t sure what to do with this. Barbosu had six judges go 7.5-7.8 but one went 7.1, Finland’s Maisa Kuusikko got five scores between 7.2-7.4, and then a 6.8 and a 6.3.
Speaking of Kuusikko, she apparently suffered an injury in Mersin yesterday and didn’t compete today. Don’t know what it is but that’s not good timing for Worlds/Olympic qualification.