If you develop for Safari first you will feel the exact opposite: you'll get it working perfect in Safari only to have to frustratingly deal with tons of issues

If you develop for Safari first you will feel the exact opposite: you'll get it working perfect in Safari only to have to frustratingly deal with tons of issues in Chrome. I think it was objectively true that Safari was lagging 3 years ago, but in the last two years in terms of standards, Safari is equal or better. Safari feels much faster in practice for quite a while.