He hisis probably informal because it is what some people want.
I think the behavior of the recruiter will become more popular. Will it be the majority? We do not know.
By theAs time passpasses, the language isbecomes more familiar, other things like clothes at work isare replaced by t-shirt and jeanjeans. I have had feedback that some candidates decline job offeroffers where the interview was too formal. So companycompanies are adapting.
Virgin Mobile changechanged all they message withof their messages to use "ta facture", "ton téléphone", etc. When you are exiting, you hear the word "kiss". With several companies, when reaching for the sellsales department or the technical support, I was greeted with: "hey buddy, how can I help you?".
Some people are happy that there is no boundary between personal life, work, supplier, customer, etc. In the past, it was bad receiving a personal call on the job. Now, it is no more astonishing as to read a response from a work mail before going to the bed. It is your personal decision if you are pleased by this attitude and it's up to you if you accept doing business with them.