This may have happened to an extent in my country (UK) too, where AZ was the main vaccine, but became the subject of media scare-stories (driven in part, I'm sure, by some understandable anti-UK sentiment coming from the continent).
This has led to a situation where many people here are mixing vaccines. My first 2 shots were AZ, but the booster was Pfizer. I didn't have any choice over this, the decision was made for me by the NHS.
Interestingly, there are studies* that suggest a mix-and-match vaccine buffet may confer greater protection than staying with a single manufacturer.
* Anti-vaxxers take note: the Professor Snape in this video is not the character from Harry Potter.
Also had a colleague at work who got his booster shot with Pfizer, after two shots of AZ. Unfortunately, the AstraZeneca vaccine and its recorded side effects cases also impacted vaccine credibility for a large amount of people, including anti-vaxxers who used it as a stepping stone to bash on vaccinations, based on a limited number of cases. Unfortunately, it could also have assisted in my parents not wanting to get vaccinated, despite them being over 50-60 years old, with a few underlying conditions.