Thanks for explanation, but I actually asked other think (sorry for my English). For all my startup clients I'm going with Google Launchpad f1-micro instance and LAMP stack with WP module on it.
In GCP dashboard, I can't choose 7.3 as there is only 7.1 available. As far as I know I can't upgrade PHP within LAMP stack (I probably can, but probably will be broken instance). So, I'm not exactly ask for WodrPress on 7.3, I ask for LAMP 7.2 and 7.3, what should not to have any connection with compatibility of some WP plugins, as I can go on it with any other module (not just WP).
In other words, I'm not clear with this practice of Bitnami (to forcing only lowest PHP version), especially as you now confirmed how 7.3 is completely fine to run in production, as well (but how if it is not available on GCP ???).
As it is material fact how I cannot run 7.3 on GCP (I think that you confirmed that), what should I to tell to clients about 'Site Health'?
Maybe you answered but I didn't get it - you should to count how most clients are 100% 'technical ignorants' and your explanation is certainly not clear for them, or either for me. To talk about such compatibility when they have also alert from Divi (Elegant Themes) how PHP is too low??? I don't think how it will work like explanation, specifically as I never found any plugin with such issues (I'm locally with Flywheel on PHP 7.3 and all sites are first developed locally).