My tendency is to install self-extracting bolts into all cranks under my care, to limit anxiety around using crank extractors. In the past, a much respected shop in my area stripped threads in my beloved TA Zephyr crankset, at the time when these were already only available for the price of a house on Ebay. I put a Koolstop Chain Disk there, so I had to take off the self-extracting bolt, leading to that disaster.