Is "⤒" (UPWARDS ARROW TO BAR) (U+2912) not easily confused with "不"? WeChat official account management has this horrible looking guy for 置顶 next to the trash can:



Steam also uses the same character for download now:







I'm pretty sure it is just this character:
⤒
(U+2912)
which Unicode calls:

UPWARDS ARROW TO BAR

Is ⤒ (upwards arrow to bar) not very easily confused with 不?
Especially in the context of WeChat's usage?
No, it will never be confused, bacause 不 is not always used as a sign in public （因为“不”不太会当作一个符号来使用的）.