the hypothesis about ACE inhibitors and ARBs promoting covid-19 severity has never been proven in any human study and in fact ARBs have been shown to reduce mortality in one of the few covid studies which have been done:

Anti-hypertensive Angiotensin II receptor blockers associated to mitigation of disease severity in elderly COVID-19 patients https://www.medrxiv.org/content/10.1101/2020.03.20.20039586v...