Hear hear! Whenever society picks out a particular minority group and says, “THESE are the ones it is OK to look down on and mistreat” it just makes me want to defend and support that group.
These days I am a strong supporter of furries, never-Trump Republicans, and trans folk.
Actually, banks are a heavily regulated industry and they have to comply with strict non-discrimination requirements including making all reasonable accommodations for people with disabilities.
If you know someone who uses a screen reader and is therefore unable to use HSBC’s app, encourage them to file a complaint with the appropriate regulator (in the US, try https://www.consumerfinance.gov/complaint/ ).
Banks are very attentive about listening to their regulators.
(Of course, it’s possible that what HSBC did still works with commonly used screen readers for the blind because they actually thought of this.)