openssl is a vital part of the web, but it is a small tool
You consider 61.7MB of source code “small”? (That’s for openssl 3.3.2, and may not include some rust code that isn’t in the gzipped main code package.) I think maybe you need to recalibrate a bit.
You just said “large”. I would consider any project with 10MB or more of source “large”. Firefox is certainly large by that standard, but so is openssl. If your standard for “large” is “has at least as much code as Firefox”, then according to you, the Linux kernel is a small project.