PHP 7 compatibility?

Hi, I’m running WP Engine’s PHP 7 compatibility check plugin and this plugin comes up with warnings:

FILE: /.../wp-content/plugins/wp-image-compression/lib/stripe/StripeObject.php
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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 269 | WARNING | Method name "StripeObject::__toJSON" is discouraged; PHP has reserved all method names with a double underscore prefix for future use
 284 | WARNING | Method name "StripeObject::__toArray" is discouraged; PHP has reserved all method names with a double underscore prefix for future use
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Will these be fixed? Are we ok to upgrade to PHP 7 anyway, or do you expect a break as a result of this specific plugin’s warnings? Are these false positives? Something to ignore?

Thanks!