Besides the points already mentioned by others (as well as in the article), writing a cheque in this situation has the problem of being able to cash it on the other side. I cannot think of a single bank (and please correct me if I'm wrong) that would allow a client, especially a new, previously unknown client, to walk in and cash a $60k international check. Without special circumstances, you'd likely be looking at an extended hold period, which would defeat the purpose in many situations.

Source: Wrote myself a check for a similar reason (not wanting to carry more than 10k across the border). Funds were held by the receiving bank for 15 business days.