The Lotus is quite sturdy, and it is certainly strong enough for rambunctious toddlers.
It passes strict strength and stability tests. The top rail is tested with a 100lb force being applied right in the middle at a 45-degree angle, which is far more than your little one will be able to exert. It does flex a bit during this test, but is certainly strong enough. It's also very stable and can withstand little ones climbing up and over the top rail without tipping (once they are capable of doing so…please discontinue use once they are able to do this).