One cannot stop people from being proud of making a step ahead to being closer to what they identify with. And there is nothing wrong with it - each of us wants to fulfil herself / himself in life and this is only possible to achieve if one understands her/his identity first. It is for a reason the Identity level is high in the Dilts pyramid. Plus I cannot imagine hard work and breaking personal barriers without celebration!
Having said that, it is a completely separate matter how their identity expresses itself on the level of capabilities and behaviours in reality of a specific work environment. So one cannot hire people based on their identity, but based on their skills, behaviours in a specific environment. It is a mutual responsibility of both a recruiter and a candidate to understand the match on all levels, before committing. (Well, one can also run a test for a couple of months and decide based on evidence and experience).
And finally, yes - many people believe that the route to mastery leads through certifications. And Imho these two are related to some extent. My belief is rooted in the Shu-Ha-Ri development model. And this is why I'd advice everyone interested in taking courses to look for ones that are led by practitioners who have hands-on experience vs theorists (unless you strive to become a theorist). Even more I'd encourage to replace courses with learning through work in a natural setup as courses pull people out of their natural environment into an artificial environment. So invite your guru and work with her/him in your work environment.