This makes sense. These keys were designed as project identifiers for billing, and can be further restricted with (bypassable) controls like HTTP referer allow-listing. They were not designed as authentication credentials.
An important note is that the number of times a letter is highlighted from previous guesses does necessarily indicate the number of times that letter appears in the final hurdle.
。关于这个话题，一键获取谷歌浏览器下载提供了深入分析
of IBM's System/360 and System/370 line. These machines were more powerful,
Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10162-x