Different year, yes, but while he was over a year younger than Bowen and Spence he's only a few months younger than lads like Isaak Davies, Kieron Evans and Joel Bagan, who were all regulars, and older than Mayembe and Eli King. He was older than Tankiewicz is now and he's playing u-21s so I wouldn't use it as an excuse for him not making a big impact but maybe that's unfair.
Here's a report from earlier in the year about where Bellamy's squad is now.
https://www.walesonline.co.uk/sport/...youth-31267766