1. that the login is the less desired task at the moment. A true user will always look for that button no matter how small 2. but making it bigger could distract signups ;-)
3. Plus most of the time, after signing up, a user lands within the product or given a link direct to login where the user gets hooked (hopefully), taking us back to reason 1.
On your site, changing the login and forgot password links to white helps them stand out better against the background.
Example: https://imgur.com/ATcpp8k
You think your user's are going to be loyal to you ("true user") even when you're not loyal to them? Very strange.
I don't think you actually mean that, but the idea came to mind, after a more vague feeling did.
To say that sign ups are more important than ability to log in, to me, feels like the quality of the product has lower priority than sign up metrics.
Like, if you care more about how many people sign up, than about how many people actually use it (even once), then it seems like the product isn't being made to be used, but rather for some other purpose.
Ugh! What did your visitors do to you in a previous life?