To be fair, Ghidra was released in 2019 and in general knowledge was still hard to find even back in 2010 I feel (well, compared to 2026 in the age of AI)

Before that there was, and still is, IDA Pro. Works largely the same but costs a lot, on the order of $1000/seat/year. Useless for hobbyists unless pirated, but reasonable if it's your job. Probably had academic discounts.