OOP and Boost also Templates has benefits when it comes to increasing barrier of static reverse engineering.

For example, Security researcher "Marcus Hutchins" famously echoed that Boost is a cluster fuck of OOP sadness [0]

Similarly, a close friend of mine "Omer Yair" mentioned [1],

"A well written OOP malware might be harder to RE statically than a poorly written C code. Writing OOP malware badly though just makes it similar to C code so not sure of the benefits going that route."

[0] https://www.malwaretech.com/2017/04/the-kelihos-botnet.html [1] https://twitter.com/yair_omer/status/1262020385203200000