While it is entirely not necessary to enroll oneself into a cyber-security course, but if anyone gets into bitcoin deeply they would obviously be interested in security practices and learning basic security measures will be really be helpful for them in the future. Precisely speaking, if any individual is handling voluminous amounts of bitcoin regularly, I think they should be having a great knowledge or background in security related aspects since a minor mistake would cost them hundreds or thousands of $$$ easily.

After the failure of FTX, Self-custody has been of utmost importance in cryptocurrency world as any crypto company large enough can fail all of a sudden within a few days if they are not run properly. If the individual's assets in bitcoin are relatively lower, then purchasing a simple hardware wallet such as Trezor would suffice provided they are not randomly clicking onto any malicious link but OTOH if the individual is rich in fiat world and would like to convert their fiat into bitcoin by adding multiple bitcoins to their non-custodial wallet, then a security course would be of utmost importance in safeguarding their assets in long term.

Furthermore, closely monitoring CT can provide us an edge onto the various hacks happening in the bitcoin/crypto world regularly but doing that alone on a regular scale can never help us in saving from the rug pulls or hacks happening every now and then. A minor knowledge of any programming language such as python can be helpful for anyone involved in Bitcoin as we will be able to verify the source codes of multiple software applications where we store our coins.