Hello, fellow accountant.
What type of work do you do?
Accountancy is a broad profession, similar to the medical and engineering professions, which encompassed many specialties.
In my accountancy field, of taxation, I use PCs with decent ram, 16Gb/32Gb and several SSDs and HDDs (for storage) on a network with various workstations. Various software (financial/tax, adobe, accounting, browser with lots of open tabs, etc...) taxes out my network system. The workstations sometimes freezes with 16Gb ram, depending on the workload. Similarly applies to our laptops and their performances.
One does not buy low end laptops when doing more taxing work (pardon the pun).
Then again, my software is only Windows based, hence can't move to Macs.
In general, it really depends on what a 'professional' means, whether one is in the media field, financial field, engineering field, etc... and what work one does.
It's disingenuous even within a profession to say 'I can do this!' but your fellow colleagues do things differently.
If it's just 'simple' tasks, like web browser or using spreadsheets, then maybe 8Gb is enough, but everyone has to decide what's best for them.