The best thing about celery is that you don't have to use any of the advanced features. If you need the basics, stick to the basics.
On the flipside, if and when you do need more than the basics, your system will grow with you. No need to hack up cron monstrosities as you grow beyond a single server. Though, cron vs celery is kind of an apples to... celery comparison.
Even if the getting started is simple, there's still a ton of code and dependencies you're bringing into your project. Most importantly you've suddenly got dependencies on persistent processes such as Redis and RabbitMQ which need to be installed system wide. That's something that needs to be factored in to deploys, configs, restarts etc. You now need new tutorials for every deploy method (Heroku, Webfaction, PythonAnywhere and other outliers).
Yeah - everyone should ideally be comfortable with all this stuff but I try and keep anything that's more complex than a pip install in a virtualenv to an absolute minimum.
The best thing about celery is that you don't have to use any of the advanced features. If you need the basics, stick to the basics.
On the flipside, if and when you do need more than the basics, your system will grow with you. No need to hack up cron monstrosities as you grow beyond a single server. Though, cron vs celery is kind of an apples to... celery comparison.