At only $499, this should be a very popular lens for Canon, and it looks like it performs as one would expect at this pricepoint from Canon.
From the review of the Canon RF-S 18-150mm F3.5-6.3 IS STM:
When a lens features an exceptionally long focal length range, I always question the image quality it will deliver as compromises are usually involved. While this lens does not provide outstanding image sharpness, it does produce good images, and image quality is not everything. Sometimes having the right focal length immediately available gets a shot that an optically superior lens not mounted completely misses.
Don't forget the fun of photography. A small, light superzoom lens, always convenient for whatever subject shows up, aids in that fun. Read the full review