am using the brand Samsung for long time there is no issues, I given my phone into samsung service center fr the service its also the reasonable amount only...
am using the same model A51, I bought this model on relaese date, but I didn't get any issues or problem sill yet. its quite nice model... somewhere it will happened, for that will can't say the model is worst
then why they mentioned in that corporate website generally.. if it's for particular model device only will allow the beta version then they will mention that device models list. check below urlhttps://developer.samsung.com/one-ui-beta
