What I really see is that the positive comments are very suspicious,
it seems that most are false, is very striking. Note that if you are
doing this practice, Google could cancell and delete your account
permanently since this practice is criminalized in Web Store policies.
Take a look:
4.4 Prohibited Actions.
4.4.1 You agree that you will not engage in any activity with the Web
Store, including the development or publication of Products or other
materials, that violates the Google Chrome Web Store Program Policies,
or that:
knowingly violates a third party’s terms of service,
violates any applicable laws or regulations,
interferes with, disrupts, damages, harms, or accesses in an
unauthorized manner the machines, hardware, devices, servers,
networks, data, or other properties or services of any third party
including, but not limited to, Google Chrome users, Google or any
network operator, or
creates a spammy user experience, whether by posting repetitive
content or misleading information about an application’s purpose,
infringes on the intellectual property rights of others,
enables the unauthorized download of streaming content or media,
displays (via text, images, video, or other media) or links to:
illegal content,
invasions of personal privacy or violations of the right of publicity,
content that interferes with the functioning of any servers, networks,
or services of other parties,
promotions of hate or incitement of violence,
violations of intellectual property rights, including patent,
copyright, trademark, trade secret, or other proprietary right of any
party, or
pornography, obscenity, nudity, or sexual activity.